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

Hardness	Heat Treat Temp.	Quench Medium	Applications	Advantages
W-1 Tool Steel Heat Treatment
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".

	Density	Ultimate Tensile Strength	Yield Tensile Strength
Mechanical Information
Imperial	0.283 lb/in3	213,900 psi	149,000 psi
Metric	7.83 g/cc	1,475 MPa	1,030 MPa

	Modulus of Elasticity	Shear Modulus
Mechanical Information
Imperial	29,700 ksi	11,600 ksi
Metric	205 GPa	80 GPa

Hardness Rockwell/Brinell	Elongation at break percentage	Poissons Ratio
Mechanical Information
C56/575 Depending on Temper	12	0.28

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

Open for Orders 24/7!