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AISI 334 Stainless Steel vs. ASTM A372 Grade M Steel

Both AISI 334 stainless steel and ASTM A372 grade M steel are iron alloys. They have 65% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 A372 grade M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
240 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
18 to 21
Fatigue Strength, MPa 150
450 to 520
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 360
510 to 570
Tensile Strength: Ultimate (UTS), MPa 540
810 to 910
Tensile Strength: Yield (Proof), MPa 190
660 to 770

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1000
450
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
5.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.1
2.0
Embodied Energy, MJ/kg 59
27
Embodied Water, L/kg 170
61

Common Calculations

PREN (Pitting Resistance) 19
3.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
160
Resilience: Unit (Modulus of Resilience), kJ/m3 96
1140 to 1580
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
29 to 32
Strength to Weight: Bending, points 19
24 to 27
Thermal Shock Resistance, points 12
24 to 27

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
0
Carbon (C), % 0 to 0.080
0 to 0.23
Chromium (Cr), % 18 to 20
1.5 to 2.0
Iron (Fe), % 55.7 to 62.7
92.5 to 95.1
Manganese (Mn), % 0 to 1.0
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 19 to 21
2.8 to 3.9
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0.15 to 0.6
0
Vanadium (V), % 0
0 to 0.080