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System of Measurement System of Measurement |
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Appearance Appearance |
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Yield Strength Yield Strength |
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Heat Treatment Heat Treatment |
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Hardness Rating Hardness Rating |
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Hardness Hardness |
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Heat Treatable Heat Treatable |
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Specifications Met Specifications Met |
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Fabrication Fabrication |
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Maximum Yield Strength at Maximum Hardness Maximum Yield Strengthat Maximum Hardness |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Elongation Elongation |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Fatigue-Resistant High-Strength 300M Alloy Steel Rods
- Yield Strength: 100,000 psi
- Hardness: Rockwell C25 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C54
- Specifications Met: ASTM A579
A modified version of 4340 alloy steel, 300M is used in applications that require high yield strength, such as torsion bars and drive shafts. This material has been normalized for consistent hardening and machining.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.