Metal Alloys
Alloy Home
Steels
Stainless Steels
General Information
Properties
Stainless Stl. Grades
Austenitic
Martensitic
Ferritic
Precipitation Hardening
Stainless Steel List
AISI Type 2xx
AISI Type 3xx
AISI Type 4xx
AISI Type 5xx
AISI Type 6xx
* For other AISI or Non-AISI, please use the search function above or check Grades.
Specific Stainless Stl
General Information
Resources
Bibliography
Hydraulics & Pneumatics

For design and manufacturing engineers involved in buying or specifying fluid power components and systems.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Design-2-Part

How OEM's can make their parts better, faster, and more efficient.

Offshore

International news and technology for marine/offshore operations around the world.

more free magazines
 
AISI Type 304HN
Category Steel
Class Stainless steel
Type Austenitic nonstandard
Common Names Chromium-Nickel steel
Designations  United States: ASME SA240 (XM-21) , ASTM A240 , ASTM A240 (XM-21) , ASTM A276 (XM-21) , SAE 30304HN , UNS S30452

Composition
ElementWeight %
C  0.04-0.10 
Mn  2.00 
Si  1.00 
Cr  18.0-20.0 
Ni  8.0-10.5 
P  0.045 
S  0.03 
N  0.10-0.16 

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  
Tensile Strength (Mpa) 620  25  annealed (plate) more
Yield Strength (Mpa) 345 
Elongation (%) 30 
Reduction in Area (%) 50 
Hardness (HRB) 100 (max)  25  annealed (sheet, strip) more
Glossary