AISI Type 303 Stainless Steel, annealed, tested at 760°C (1400°F)


Subcategory: Ferrous Metal; Heat Resisting; Metal; Stainless Steel; T 300 Series Stainless Steel

Close Analogs: AISI Type 303 Se

Key Words: T303, T 303, 303SS, 303 SS, AFNOR Z 10 CNF 18.09 (Fr), UNI X 10 CrNiS 18 09, SUS 303, SS14 2346 (Sweden), B.S. 303 S 21, UNS S30300, AMS 5640 (1), ASME SA194, ASME SA320, ASTM A194, ASTM A314, ASTM A320, ASTM A320, ASTM A473, ASTM A581, ASTM A582, MIL SPEC MIL-S-862, SAE J405 (30303), DIN 1.4305, X12CrNiS188, EN 58M, austenitic, ISO 683/13 17, 18-8

Component   Wt. %
CMax 0.15 
Cr18 
Fe69 
Component   Wt. %
MnMax 2 
MoMax 0.6 
Ni9 
Component   Wt. %
PMax 0.2 
SMin 0.15 
SiMax 1 

Material Notes:
Short time tensile test, 5 MPa stress for 1% creep at 10,000 hours

Physical PropertiesMetricEnglishComments
Density8 g/cc0.289 lb/in³ 

Mechanical Properties
Tensile Strength, Ultimate205 MPa29700 psi 
Tensile Strength, Yield145 MPa21000 psi at 0.2% offset
Elongation at Break31 %31 % in 50 mm
Modulus of Elasticity193 GPa28000 ksi tension
Poisson's Ratio0.250.25 Calculated
Shear Modulus77.2 GPa11200 ksi 

Electrical Properties
Electrical Resistivity7.2e-005 ohm-cm7.2e-005 ohm-cm 

Thermal Properties
CTE, linear 250°C17.8 µm/m-°C9.89 µin/in-°F at 0-315°C (32-600°F)
CTE, linear 500°C18.4 µm/m-°C10.2 µin/in-°F at 0-540°C, 18.7 µm/m-C at 0-650°C
Specific Heat Capacity0.5 J/g-°C0.12 BTU/lb-°F from 0-100°C (32-212°F)
Thermal Conductivity16.2 W/m-K112 BTU-in/hr-ft²-°F at 100°C (212°F), 21.5 W/m-K at 500°C (930°F)
Melting Point1400 - 1420 °C2550 - 2590 °F 
Solidus1400 °C2550 °F 
Liquidus1420 °C2590 °F 

References for this datasheet.


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