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W1
W1 Product Guide
Applications | Specifications | Mechanical and Chemical Data | Tolerances
Overview
A water hardening tool steel that is one of the most commonly used tool steels due to its strong characteristics. It does undergo a decent amount of distortion during quenching, so do be aware of that. It is typically used in shafts, pins, blacksmithing tools, and short term wearing tooling.
Common Trade Names
UNS T72301, AISI Type W1, Watercrat
Other Resources
Weight Calculator | Mill Test Reports
Products
W1 Drill Rod | W1 Rectangle Bar | W1 Square Bar
Specifications
ASTM | SAE |
|---|---|
| A681 | J437 |
Applications
- Blacksmithing Tools
- Shafts
- Pins
- Short Term Wearing Tooling
| W-1 Tool Steel Heat Treatment | ||||
Hardness | Heat Treat Temp. | Quench Medium | Applications | Advantages |
|---|---|---|---|---|
| As Shipped: Rockwell 91B
After Heat Treating: Rockwell 56C | 1450°-1600°F | Water or Brine | Blacksmith tools, Cold Chisels, Hand punches, Cold Forming Tools, Knives, Scissors and Shears, Razors, Woodworking Chisels | Water hardening tool steels tend to experience significant distortion during the quench operation. In addition, the hardening operation applies only to the outer "case" of the material, rather than being "through-hardened". |
| Physical Properties W1 | |||||
| Annealed | Hardened | ||||
|---|---|---|---|---|---|
| Density | 0.283 lb/in3 | 0.283 lb/in3 | |||
| Ultimate Tensile Strength | 86 ksi | 213.9 ksi | |||
| Yield Tensile Strength | 48 ksi | 149 ksi | |||
| Shear Modulus | 10,000 ksi | 10,000 ksi | |||
| Shear Strength | 54 ksi | N/A | |||
| Hardness Rockwell | Brinell | B91 | 190 | C56 | 577 | |||
| Elongation at Break Percentage | 23% | 12% | |||
| Modulus of Elasticity | 27,000 ksi | 27,000 ksi | |||
| Poisson's Ratio | 0.29 | 0.29 | |||
| Machinability Percentage | 100% | 40% | |||
| Melting Point | 2,570-2,640 °F | 2,570-2,640 °F | |||
| Specific Heat | 1.1 x 10^-1 BTU/lb-°F | 1.1 x 10^-1 BTU/lb-°F | |||
| Thermal Conductivity | 336 BTU-in/hr-ft^2-°F | 336 BTU-in/hr-ft^2-°F | |||
| Electrical Conductivity | 7.1% IACS | 7.1% IACS | |||
|
Chemistry Information
|
|
Element |
Percentage |
| C | 0.6 - 1.4 |
| Cr | 0.15 max |
| Fe | 98 |
| V | 0.1 max |
| S | 0.025 max |
| P | 0.025 max |
| Mn | 0.25 |
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