Metal Alloys
Alloy Home
Stainless Steels
General Information
Stainless Stl. Grades
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
Machine Design

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

World Pumps

Major news, innovation and real-life applications for pumps and ancillary equipment.

NASA Tech Briefs

Innovations developed by NASA and its industry partners in a wide array of fields.

Wind Systems

Towers, turbines, gearboxes; processes for shaping and finishing component parts.

more free magazines
AISI Type 329
Category Steel
Class Stainless steel
Type Austenitic standard
Common Names Chromium-Nickel steel
Designations  United States: ASME SA268 , ASTM A268 , ASTM A511 , SAE 30329 , UNS S32900

ElementWeight %
C  0.10 
Mn  2.00 
Si  1.00 
Cr  25.0-30.0 
Ni  3.0-6.0 
P  0.045 
S  0.03 
Mo  1.0-2.0 

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) 724  25  annealed (bar) 
Yield Strength (Mpa) 550 
Elongation (%) 25 
Reduction in Area (%) 50 

Thermal Properties
Properties Conditions 
T (°C)Treatment
Specific Heat (J/kg-K) 460  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 750  25