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AISI Type 434
Category Steel
Class Stainless steel
Type Ferritic standard
Common Names Chromium steel
Designations  France: AFNOR Z 8 CD 17.01
Germany: DIN 1.4113
Italy: UNI X 8 CrMo 17
Japan: JIS SUS 434
Sweden: SS 2325
United Kingdom: B.S. 434 S 19
United States: ASTM A65i , SAE 51434 , SAE J405 (51434) , UNS S43400

Composition
ElementWeight %
C  0.12 
Mn  1.00 
Si  1.00 
Cr  16.0-18.0 
P  0.04 
S  0.03 
Mo  0.75-1.25 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.8 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 200 25  
Tensile Strength (Mpa) 545  25  annealed (sheet) more
Yield Strength (Mpa) 415 
Elongation (%) 33 
Reduction in Area (%) 78 
Hardness (HRB) 90 (max)  25  annealed (sheet) more

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 10.4  0-100 more  
Thermal Conductivity (W/m-K) 26.3  500   
Specific Heat (J/kg-K) 460  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 600  25   
Glossary
Mechanical Engineers Outlook

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

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

CNC Machining Design Guide

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

Metal 3D Printing Design Guide

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