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CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

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AISI W1
Category Steel
Class Tool steel
Type Water-hardening tool steel
Designations  United States: ASTM A686 , SAE J437 (W108) , SAE J437 (W109) , SAE J437 (W112) , SAE J437 (WhO) , SAE J438 (W108) , SAE J438 (W109) , SAE J438 (W110) , SAE J438 (W112) , UNS T72301

Composition
ElementWeight %
C  0.70-1.50 
Mn  0.10-0.40 
Si  0.10-0.40 
Cr  0.15 
Ni  0.20 
Mo  0.10 
W  0.15 
V  0.10 
Cu  0.20 
P  0.025 
S  0.025 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.84 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 10.4  20-100 more  
Thermal Conductivity (W/m-K) 48.3  100 more  
Glossary
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.