Metal Alloys
Alloy Home
Steels
Tool Steels
General Information
Properties
Tool Steel Types
High-Speed
Hot-Work
Cold-Work
Shock-Resistant
Mold
Special-Purpose
Water-Hardening
Tool Steel List
AISI Ax
AISI Dx
AISI Hx
AISI Lx
AISI Mx
AISI Ox
AISI Px
AISI Sx
AISI Tx
AISI Wx
Specific Tool Steel
General Information
Resources
Bibliography
Machine Design

How-to, in-depth technical articles for machine design engineers

Power Transmission

Gear drives, bearings, motors, clutches, couplings, machine controls, sensors and components.

Metal 3D Printing Design Guide

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

Chemical Engineering

The industry gateway for chemical engineering and plant operations.

more free magazines
 
AISI H12
Category Steel
Class Tool steel
Type Chromium hot work steel
Designations  Germany: DIN 1.2606
Italy: UNI KU
Japan: JIS SKD62
United Kingdom: B.S. BH 12
United States: ASTM A681 , FED QQ-T-570 , SAE J437 , SAE J438 , SAE J467 , UNS T20812

Composition
ElementWeight %
C  0.30-0.40 
Mn  0.20-0.50 
Si  0.80-1.20 
Cr  4.75-5.50 
Ni  0.3 
Mo  1.25-1.75 
W  1.00-1.70 
V  0.5 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Glossary