Tight-Tolerance Oil-Hardening O1 Tool Steel Bar
3 mm Thick, 100 mm Wide, 3 Feet Long
Hardening Method | Oil |
Thickness | 3.000 mm |
Thickness Tolerance | 0.000 mm to 0.050 mm |
Length | 3 ft. |
Width | 100 mm |
Width Tolerance | 0.000 mm to 0.200 mm |
Fabrication | Hot Rolled |
Heat Treatment | Annealed |
Yield Strength | 80,000 psi |
Mechanical Finish | Precision Ground |
Hardness | Rockwell B90 |
Hardness Rating | Medium |
Maximum Hardness After Heat Treatment | Rockwell C65 |
Specifications Met | ASTM A681 |
Appearance | Plain |
Application | Multipurpose |
Certificate Form | Digital |
Certificate Type | Material Certificate with Traceable Lot Number |
Coefficient of Thermal Expansion | 7.1 × 10^-6 |
Elongation | 25% |
Flatness Tolerance | 0.005"/1 ft. |
Heat Treatable | Yes |
Length Tolerance Type | Plus |
Material | O1 Tool Steel |
Material Composition | |
Carbon | 0.85% to 1.05% |
Chromium | 0.40% to 0.70% |
Iron | Remainder |
Manganese | 1.00% to 1.40% |
Phosphorus | 0% to 0.030% |
Silicon | 0% to 0.50% |
Sulfur | 0% to 0.030% |
Tungsten | 0.40% to 0.60% |
Vanadium | 0% to 0.30% |
Maximum Temperature | Not Rated |
Minimum Temperature | Not Rated |
Performance | Extra High Strength, Machinable, Tough, Wear Resistant |
Shape | Bar, Sheet |
Tolerance Rating | Tight, Oversized |
Warning Message | Physical and mechanical properties are not guaranteed. They are intended only as a basis for comparison and not for design purposes. |
Country of Origin | United States, Germany |
DFARS Compliance | Specialty Metals Compliant (252.225-7009) |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (02/04/2026, 253 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 722860.1000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
Additional Specifications |
Also known as flat stock, these precision-ground bars are held to a tight thickness tolerance. Often used for dies, punches, and gauges, O1 tool steel is an oil-hardening material that resists wear and abrasion.
The information in this 3-D model is provided for reference only.