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EN 1.4658 Stainless Steel vs. ASTM A372 Grade M Steel

Both EN 1.4658 stainless steel and ASTM A372 grade M steel are iron alloys. They have 63% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4658 stainless steel and the bottom bar is ASTM A372 grade M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
240 to 280
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 28
18 to 21
Fatigue Strength, MPa 530
450 to 520
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 580
510 to 570
Tensile Strength: Ultimate (UTS), MPa 900
810 to 910
Tensile Strength: Yield (Proof), MPa 730
660 to 770

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
450
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.5
2.0
Embodied Energy, MJ/kg 61
27
Embodied Water, L/kg 200
61

Common Calculations

PREN (Pitting Resistance) 49
3.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
160
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
1140 to 1580
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
29 to 32
Strength to Weight: Bending, points 26
24 to 27
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 24
24 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.23
Chromium (Cr), % 26 to 29
1.5 to 2.0
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
92.5 to 95.1
Manganese (Mn), % 0 to 1.5
0.2 to 0.4
Molybdenum (Mo), % 4.0 to 5.0
0.4 to 0.6
Nickel (Ni), % 5.5 to 9.5
2.8 to 3.9
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 0.3
Sulfur (S), % 0 to 0.010
0 to 0.010
Vanadium (V), % 0
0 to 0.080