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AISI Type 409
Category Steel
Class Stainless steel
Type Ferritic standard
Common Names Chromium steel
Designations  Germany: DIN 1.4512
Japan: JIS SUH 409
United Kingdom: B.S. 409 S 17
United States: ASME SA268 , ASTM A176 , ASTM A268 , ASTM A651 , SAE 51409 , SAE J405 (51409) , UNS S40900

Composition
ElementWeight %
C  0.08 
Mn  1.00 
Si  1.00 
Cr  10.5-11.75 
P  0.045 
S  0.045 
Ti  0.48-0.75 

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) 190-210 25  
Tensile Strength (Mpa) 450  25  annealed (plate, sheet, strip) more
Yield Strength (Mpa) 240 
Elongation (%) 25 
Reduction in Area (%)  
Hardness (HRB) 80 (max)  25  annealed (bar) more

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 11.7  0-100  
Thermal Conductivity (W/m-K) 24.9  95 more  
Glossary
Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

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.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.