Translation missing: en.sections.collection_template.title: Raw Materials

The Foundation of Every Project – Buy Raw Materials Online at The Avenjers

Every great build begins with quality materials. At The Avenjers, we make it easy to Buy Raw Materials Online for all your industrial, commercial, and DIY needs. Whether you're fabricating, repairing, or manufacturing, our Bulk Industrial Supply for Work provides a solid foundation for superior performance and lasting results.

Materials That Work as Hard as You Do

Our raw materials are sourced for their consistency, strength, and versatility. Choose from a wide range of options, including:

  • Metals like aluminum, brass, copper, and steel sheets
  • Plastics and polymers for fabrication and insulation
  • Rubber, foam, and sealing materials
  • Welding rods, fillers, and other essentials

Each material meets strict industry standards and is available in various sizes, thicknesses, and quantities.

Ideal for Every Industry

Whether you’re building machines or crafting prototypes, our Bulk Industrial Supply for Work is used across sectors such as:

  • Construction and infrastructure
  • Automotive and aerospace manufacturing
  • Electrical and HVAC installations
  • Furniture, signage, and décor design

Our inventory ensures you always have the right material, when and where you need it.

Why Buy Raw Materials Online from The Avenjers?

  • A broad variety of ready-to-use raw supplies
  • Accurate measurements and consistent quality
  • Bulk ordering options for cost-effective sourcing
  • Reliable shipping and responsive support

Whether you need small quantities or bulk loads, we deliver exactly what your job demands.

Stock Up with Confidence

Avoid delays by keeping your shop or site stocked with essential materials. Our raw materials are packed securely, labeled clearly, and always ready for immediate application.

Build with confidence – Buy Raw Materials Online at The Avenjers and get high-quality Bulk Industrial Supply for Work delivered to your door!

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  • Carbon Steel Square Expanded Sheet, 36 in
    SKU G506626107
    Categories Raw Materials
    Description A36 Carbon Steel Square Expanded Sheet, Material Carbon Steel, Material Grade A36, Mechanical Finish Mill, Overall Length 36 in, Overall Thickness 0.284 in, Overall Width 36 in, Diamond Pattern Raised, Strand Thickness 0.09 in, Strand Width 0.138 in, Trade Size 1 1/2 in-#10, Long Way Diamond Size 3 in, Short Way Diamond Size 1.33 in, Long Way of Opening 2.5 in, Short Way of Opening 1.188 in, Fabrication Hot Rolled, Machinability 72 Percent, Appearance Metallic, Brinell Hardness 140
    $47.24 / each
    Web price
    Carbon Steel Square Expanded Sheet, 36 in
    SKU G506626107
    Categories Raw Materials
    Description A36 Carbon Steel Square Expanded Sheet, Material Carbon Steel, Material Grade A36, Mechanical Finish Mill, Overall Length 36 in, Overall Thickness 0.284 in, Overall Width 36 in, Diamond Pattern Raised, Strand Thickness 0.09 in, Strand Width 0.138 in, Trade Size 1 1/2 in-#10, Long Way Diamond Size 3 in, Short Way Diamond Size 1.33 in, Long Way of Opening 2.5 in, Short Way of Opening 1.188 in, Fabrication Hot Rolled, Machinability 72 Percent, Appearance Metallic, Brinell Hardness 140
  • 0.5" Hole x #13 Carbon Steel Expanded A36-Flattened
    SKU G006625976
    Categories Raw Materials
    Description A36 Carbon Steel Square Expanded Sheet, Material Carbon Steel, Material Grade A36, Mechanical Finish Mill, Overall Length 36 in, Overall Thickness 0.078 in, Overall Width 36 in, Diamond Pattern Flattened, Strand Thickness 0.078 in, Strand Width 0.107 in, Trade Size 1/2 in-#13, Long Way Diamond Size 1.25 in, Short Way Diamond Size 0.5 in, Long Way of Opening 1 in, Short Way of Opening 0.265 in, Fabrication Hot Rolled, Machinability 72 Percent, Appearance Metallic, Brinell Hardness 140
    $78.17 / each
    Web price
    0.5" Hole x #13 Carbon Steel Expanded A36-Flattened
    SKU G006625976
    Categories Raw Materials
    Description A36 Carbon Steel Square Expanded Sheet, Material Carbon Steel, Material Grade A36, Mechanical Finish Mill, Overall Length 36 in, Overall Thickness 0.078 in, Overall Width 36 in, Diamond Pattern Flattened, Strand Thickness 0.078 in, Strand Width 0.107 in, Trade Size 1/2 in-#13, Long Way Diamond Size 1.25 in, Short Way Diamond Size 0.5 in, Long Way of Opening 1 in, Short Way of Opening 0.265 in, Fabrication Hot Rolled, Machinability 72 Percent, Appearance Metallic, Brinell Hardness 140
  • Carbon Steel Bar, 6" L, 2 1/2" W
    SKU G701842029
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 0.31 in, Thickness Tolerance -0.003 in, Overall Length 6 in, Overall Width 2 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Appearance Unpolished, Length Tolerance +0.125 in/-0 in

    graingerSKU: 782U83, mscSKU: , zoro_no: G701842029, mongo_id: 65bbe79c3aaddbd5a90a4d12

    $14.80 / each
    Web price
    Carbon Steel Bar, 6" L, 2 1/2" W
    SKU G701842029
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 0.31 in, Thickness Tolerance -0.003 in, Overall Length 6 in, Overall Width 2 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Appearance Unpolished, Length Tolerance +0.125 in/-0 in

    graingerSKU: 782U83, mscSKU: , zoro_no: G701842029, mongo_id: 65bbe79c3aaddbd5a90a4d12

  • Carbon Steel Bar, 24" L, 1 3/8" W
    SKU G601841245
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 0.5 in, Thickness Tolerance -0.003 in, Overall Length 24 in, Overall Width 1 3/8 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Appearance Unpolished, Length Tolerance +/-2 in

    graingerSKU: 782UN7, mscSKU: , zoro_no: G601841245, mongo_id: 65bbe79c3aaddbd5a90a4d18

    $25.41 / each
    Web price
    Carbon Steel Bar, 24" L, 1 3/8" W
    SKU G601841245
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 0.5 in, Thickness Tolerance -0.003 in, Overall Length 24 in, Overall Width 1 3/8 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Appearance Unpolished, Length Tolerance +/-2 in

    graingerSKU: 782UN7, mscSKU: , zoro_no: G601841245, mongo_id: 65bbe79c3aaddbd5a90a4d18

  • 0.125" x 0.5" Carbon Steel Rectangle Bar Commercial Quality Hot Rolled
    SKU G407044697
    Categories Raw Materials
    Description A36 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade A36, Thickness 0.125 in, Thickness Tolerance +/-0.007 in, Overall Length 12 in, Overall Width 1/2 in, Fabrication Hot Rolled, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 36,000 psi, Tensile Strength 58,000 psi, Brinell Hardness 140, Rockwell Hardness B84, Machinability 72 Percent, Standards ASTM A36, Appearance Metallic, Includes Material Certificate Yes, Shape Rectangular Bar
    $5.27 / each
    Web price
    0.125" x 0.5" Carbon Steel Rectangle Bar Commercial Quality Hot Rolled
    SKU G407044697
    Categories Raw Materials
    Description A36 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade A36, Thickness 0.125 in, Thickness Tolerance +/-0.007 in, Overall Length 12 in, Overall Width 1/2 in, Fabrication Hot Rolled, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 36,000 psi, Tensile Strength 58,000 psi, Brinell Hardness 140, Rockwell Hardness B84, Machinability 72 Percent, Standards ASTM A36, Appearance Metallic, Includes Material Certificate Yes, Shape Rectangular Bar
  • Carbon Steel Bar, 24" L, 1 1/2" W
    SKU G702646343
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 0.375 in, Thickness Tolerance +/-0.001 in, Overall Length 24 in, Overall Width 1 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Precision Ground, Yield Strength 53,700 psi, Tensile Strength 63,800 psi, Brinell Hardness 126, Rockwell Hardness 71, Machinability 78 Percent, Standards ASTM A681, Appearance Metallic, Includes Material Certificate Yes
    $62.20 / each
    Web price
    Carbon Steel Bar, 24" L, 1 1/2" W
    SKU G702646343
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 0.375 in, Thickness Tolerance +/-0.001 in, Overall Length 24 in, Overall Width 1 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Precision Ground, Yield Strength 53,700 psi, Tensile Strength 63,800 psi, Brinell Hardness 126, Rockwell Hardness 71, Machinability 78 Percent, Standards ASTM A681, Appearance Metallic, Includes Material Certificate Yes
  • Carbon Steel Plate, 36 in L, 10 in W
    SKU G006904088
    Categories Raw Materials
    Description 1018 Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Yes, Heat Treatment Case Hardened, Mechanical Finish Polished, Overall Length 36 in, Overall Width 10 in, Thickness 1.75 in, Thickness Tolerance +0.000 in/-0.0013 in, Yield Strength 54,000 psi, Fabrication Cold Finished, Machinability 78 Percent, Rockwell Hardness Not Rated, Tensile Strength 80,000 psi, Width Tolerance +0.000 in/-0.0013 in, Standards ASTM A108, ASTM A29, Brinell Hardness 70, Shape Plate

    graingerSKU: 799NY0, mscSKU: , zoro_no: G006904088, mongo_id: 65bbe79c3aaddbd5a90a4cd7

    $1,099.24 / each
    Web price
    Carbon Steel Plate, 36 in L, 10 in W
    SKU G006904088
    Categories Raw Materials
    Description 1018 Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Yes, Heat Treatment Case Hardened, Mechanical Finish Polished, Overall Length 36 in, Overall Width 10 in, Thickness 1.75 in, Thickness Tolerance +0.000 in/-0.0013 in, Yield Strength 54,000 psi, Fabrication Cold Finished, Machinability 78 Percent, Rockwell Hardness Not Rated, Tensile Strength 80,000 psi, Width Tolerance +0.000 in/-0.0013 in, Standards ASTM A108, ASTM A29, Brinell Hardness 70, Shape Plate

    graingerSKU: 799NY0, mscSKU: , zoro_no: G006904088, mongo_id: 65bbe79c3aaddbd5a90a4cd7

  • Carbon Steel Plate, 36 in L, 12 in W
    SKU G906904041
    Categories Raw Materials
    Description 1018 Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Yes, Heat Treatment Case Hardened, Mechanical Finish Polished, Overall Length 36 in, Overall Width 12 in, Thickness 1.25 in, Thickness Tolerance +0.000 in/-0.0013 in, Yield Strength 54,000 psi, Fabrication Cold Finished, Machinability 78 Percent, Rockwell Hardness Not Rated, Tensile Strength 80,000 psi, Width Tolerance +0.000 in/-0.0013 in, Standards ASTM A108, ASTM A29, Brinell Hardness 70, Shape Plate

    graingerSKU: 799NM0, mscSKU: , zoro_no: G906904041, mongo_id: 65bbe79c3aaddbd5a90a4cdd

    $914.74 / each
    Web price
    Carbon Steel Plate, 36 in L, 12 in W
    SKU G906904041
    Categories Raw Materials
    Description 1018 Carbon Steel Plate, Material Carbon Steel, Material Grade 1018, Heat Treatable Yes, Heat Treatment Case Hardened, Mechanical Finish Polished, Overall Length 36 in, Overall Width 12 in, Thickness 1.25 in, Thickness Tolerance +0.000 in/-0.0013 in, Yield Strength 54,000 psi, Fabrication Cold Finished, Machinability 78 Percent, Rockwell Hardness Not Rated, Tensile Strength 80,000 psi, Width Tolerance +0.000 in/-0.0013 in, Standards ASTM A108, ASTM A29, Brinell Hardness 70, Shape Plate

    graingerSKU: 799NM0, mscSKU: , zoro_no: G906904041, mongo_id: 65bbe79c3aaddbd5a90a4cdd

  • Carbon Steel Bar, 6' L, 3 1/2" W
    SKU G901841433
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 1.5 in, Thickness Tolerance -0.004 in, Overall Length 6 ft, Overall Width 3 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Appearance Unpolished, Length Tolerance +/-6 in

    graingerSKU: 782W32, mscSKU: , zoro_no: G901841433, mongo_id: 65bbe79c3aaddbd5a90a4cdf

    $375.74 / each
    Web price
    Carbon Steel Bar, 6' L, 3 1/2" W
    SKU G901841433
    Categories Raw Materials
    Description 1018 Carbon Steel Rectangular Bar, Material Carbon Steel, Material Grade 1018, Thickness 1.5 in, Thickness Tolerance -0.004 in, Overall Length 6 ft, Overall Width 3 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Yield Strength 54,000 psi, Tensile Strength 80,000 psi, Brinell Hardness 70, Rockwell Hardness Not Rated, Machinability 78 Percent, Standards ASTM A108, ASTM A29, Appearance Unpolished, Length Tolerance +/-6 in

    graingerSKU: 782W32, mscSKU: , zoro_no: G901841433, mongo_id: 65bbe79c3aaddbd5a90a4cdf

  • Alloy Bar/Rod, 4340, 3.750 Dia, 1 ft.
    SKU G9314965
    Categories Raw Materials
    Description Alloy Bar/Rod,4340,3.750 Dia,1 ft.
    $189.99 / each
    Web price
    Alloy Bar/Rod, 4340, 3.750 Dia, 1 ft.
    SKU G9314965
    Categories Raw Materials
    Description Alloy Bar/Rod,4340,3.750 Dia,1 ft.
  • Alloy Bar/Rod, 4340, 4.250 Dia, 2 ft.
    SKU G9313827
    Categories Raw Materials
    Description Alloy Bar/Rod,4340,4.250 Dia,2 ft.
    $864.99 / each
    Web price
    Alloy Bar/Rod, 4340, 4.250 Dia, 2 ft.
    SKU G9313827
    Categories Raw Materials
    Description Alloy Bar/Rod,4340,4.250 Dia,2 ft.
  • Alloy Steel Rod, 12 in L, 1 3/4 in Dia.
    SKU G802644423
    Categories Raw Materials
    Description 4340 Alloy Steel Rod, Material Alloy Steel, Material Grade 4340, Overall Length 12 in, Heat Treatable Yes, Heat Treatment Tempered, Mechanical Finish Mill, Outside Diameter 1 3/4 in, Outside Diameter Tolerance +/-0.016 in, Yield Strength 125,000 psi, Fabrication Cold Finished, Rockwell Hardness B100, Brinell Hardness 363, Machinability 50 Percent, Tensile Strength 185,000 psi, Includes Material Certificate Yes, Standards AMS 6415, AMS 6484, ASTM A108, ASTM A29, ASTM A322
    $105.51 / each
    Web price
    Alloy Steel Rod, 12 in L, 1 3/4 in Dia.
    SKU G802644423
    Categories Raw Materials
    Description 4340 Alloy Steel Rod, Material Alloy Steel, Material Grade 4340, Overall Length 12 in, Heat Treatable Yes, Heat Treatment Tempered, Mechanical Finish Mill, Outside Diameter 1 3/4 in, Outside Diameter Tolerance +/-0.016 in, Yield Strength 125,000 psi, Fabrication Cold Finished, Rockwell Hardness B100, Brinell Hardness 363, Machinability 50 Percent, Tensile Strength 185,000 psi, Includes Material Certificate Yes, Standards AMS 6415, AMS 6484, ASTM A108, ASTM A29, ASTM A322
  • Alloy Steel Rectangle Bar, 18 in L, 4 in W
    SKU G406599792
    Categories Raw Materials
    Description 4142 Alloy Steel Rectangular Bar, Material Alloy Steel, Material Grade 4142, Thickness 0.625 in, Thickness Tolerance +/-0.001 in, Overall Length 18 in, Overall Width 4 in, Fabrication Hot Rolled, Heat Treatable Yes, Heat Treatment Pre-Hardened, Mechanical Finish Mill, Yield Strength Not Rated, Tensile Strength Not Rated, Brinell Hardness 187, Rockwell Hardness B94, Machinability 50 Percent, Standards ASTM A322, Appearance Metallic, Includes Material Certificate Yes, Shape Rectangular Bar
    $287.99 / each
    Web price
    Alloy Steel Rectangle Bar, 18 in L, 4 in W
    SKU G406599792
    Categories Raw Materials
    Description 4142 Alloy Steel Rectangular Bar, Material Alloy Steel, Material Grade 4142, Thickness 0.625 in, Thickness Tolerance +/-0.001 in, Overall Length 18 in, Overall Width 4 in, Fabrication Hot Rolled, Heat Treatable Yes, Heat Treatment Pre-Hardened, Mechanical Finish Mill, Yield Strength Not Rated, Tensile Strength Not Rated, Brinell Hardness 187, Rockwell Hardness B94, Machinability 50 Percent, Standards ASTM A322, Appearance Metallic, Includes Material Certificate Yes, Shape Rectangular Bar
  • 0.09" Alloy Steel Sheet 4130-Annealed
    SKU G106599108
    Categories Raw Materials
    Description 4130 Alloy Steel Sheet, Material Alloy Steel, Material Grade 4130, Heat Treatable Yes, Heat Treatment Annealed, Mechanical Finish Mill, Overall Length 24 in, Overall Width 12 in, Thickness 0.09 in, Thickness Tolerance +/-0.009 in, Yield Strength 66,000 psi, Fabrication Cold Finished, Rockwell Hardness B82, Machinability 70 Percent, Tensile Strength 81,000 psi, Length Tolerance Not Rated, Width Tolerance Not Rated, Standards AMS 6350, AMS 6351, ASTM A505, Includes Material Certificate Yes
    $71.42 / each
    Web price
    0.09" Alloy Steel Sheet 4130-Annealed
    SKU G106599108
    Categories Raw Materials
    Description 4130 Alloy Steel Sheet, Material Alloy Steel, Material Grade 4130, Heat Treatable Yes, Heat Treatment Annealed, Mechanical Finish Mill, Overall Length 24 in, Overall Width 12 in, Thickness 0.09 in, Thickness Tolerance +/-0.009 in, Yield Strength 66,000 psi, Fabrication Cold Finished, Rockwell Hardness B82, Machinability 70 Percent, Tensile Strength 81,000 psi, Length Tolerance Not Rated, Width Tolerance Not Rated, Standards AMS 6350, AMS 6351, ASTM A505, Includes Material Certificate Yes
  • Alloy Steel Rod, 24 in L, 1 1/2 in Dia.
    SKU G406599570
    Categories Raw Materials
    Description 4340 Alloy Steel Rod, Material Alloy Steel, Material Grade 4340, Overall Length 24 in, Heat Treatable Yes, Heat Treatment Annealed, Mechanical Finish Mill, Outside Diameter 1 1/2 in, Outside Diameter Tolerance +/-0.014 in, Yield Strength 68,000 psi, Fabrication Hot Rolled, Rockwell Hardness B95, Brinell Hardness 217, Machinability 50 Percent, Tensile Strength 108,000 psi, Includes Material Certificate Yes, Standards AMS 6415, AMS 6484, ASTM A29, ASTM A322, Length Tolerance +/-0.014 in, Shape Rod
    $116.99 / each
    Web price
    Alloy Steel Rod, 24 in L, 1 1/2 in Dia.
    SKU G406599570
    Categories Raw Materials
    Description 4340 Alloy Steel Rod, Material Alloy Steel, Material Grade 4340, Overall Length 24 in, Heat Treatable Yes, Heat Treatment Annealed, Mechanical Finish Mill, Outside Diameter 1 1/2 in, Outside Diameter Tolerance +/-0.014 in, Yield Strength 68,000 psi, Fabrication Hot Rolled, Rockwell Hardness B95, Brinell Hardness 217, Machinability 50 Percent, Tensile Strength 108,000 psi, Includes Material Certificate Yes, Standards AMS 6415, AMS 6484, ASTM A29, ASTM A322, Length Tolerance +/-0.014 in, Shape Rod
  • Alloy Steel Rectangle Bar, 24" L, 3 1/2" W
    SKU G706903794
    Categories Raw Materials
    Description 4140 Alloy Steel Rectangular Bar, Material Alloy Steel, Material Grade 4140, Thickness 2.5 in, Thickness Tolerance +0.000 in/-0.008 in, Overall Length 24 in, Overall Width 3 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment Annealed, Mechanical Finish Mill, Yield Strength 60,000 psi, Tensile Strength 95,000 psi, Brinell Hardness 187, Rockwell Hardness Not Rated, Machinability 66 Percent, Standards ASTM A304, ASTM A322, ASTM A331, Shape Rectangular Bar
    $525.36 / each
    Web price
    Alloy Steel Rectangle Bar, 24" L, 3 1/2" W
    SKU G706903794
    Categories Raw Materials
    Description 4140 Alloy Steel Rectangular Bar, Material Alloy Steel, Material Grade 4140, Thickness 2.5 in, Thickness Tolerance +0.000 in/-0.008 in, Overall Length 24 in, Overall Width 3 1/2 in, Fabrication Cold Finished, Heat Treatable Yes, Heat Treatment Annealed, Mechanical Finish Mill, Yield Strength 60,000 psi, Tensile Strength 95,000 psi, Brinell Hardness 187, Rockwell Hardness Not Rated, Machinability 66 Percent, Standards ASTM A304, ASTM A322, ASTM A331, Shape Rectangular Bar