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ASTM A372 Grade H Steel vs. EN 1.4971 Stainless Steel

Both ASTM A372 grade H steel and EN 1.4971 stainless steel are iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 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 ASTM A372 grade H steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 280
240
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 20 to 22
34
Fatigue Strength, MPa 310 to 380
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
81
Shear Strength, MPa 410 to 570
530
Tensile Strength: Ultimate (UTS), MPa 650 to 910
800
Tensile Strength: Yield (Proof), MPa 430 to 550
340

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 45
13
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.5
7.6
Embodied Energy, MJ/kg 20
110
Embodied Water, L/kg 49
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 160
220
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 810
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 32
26
Strength to Weight: Bending, points 21 to 27
23
Thermal Diffusivity, mm2/s 12
3.4
Thermal Shock Resistance, points 19 to 27
19

Alloy Composition

Carbon (C), % 0.3 to 0.4
0.080 to 0.16
Chromium (Cr), % 0.4 to 0.65
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 97.3 to 98.3
24.3 to 37.1
Manganese (Mn), % 0.75 to 1.1
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0