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AISI 334 Stainless Steel vs. ASTM A302 Alloy Steel

Both AISI 334 stainless steel and ASTM A302 alloy steel are iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 334 stainless steel and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
20 to 23
Fatigue Strength, MPa 150
250 to 280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 360
370 to 390
Tensile Strength: Ultimate (UTS), MPa 540
590 to 620
Tensile Strength: Yield (Proof), MPa 190
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1000
410
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
2.4 to 3.0
Density, g/cm3 7.9
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 4.1
1.5 to 1.6
Embodied Energy, MJ/kg 59
20 to 21
Embodied Water, L/kg 170
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 96
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
21 to 22
Strength to Weight: Bending, points 19
20 to 21
Thermal Shock Resistance, points 12
17 to 18