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ASTM A372 Grade K Steel vs. EN 1.4372 Stainless Steel

Both ASTM A372 grade K steel and EN 1.4372 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade K steel and the bottom bar is EN 1.4372 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
47
Fatigue Strength, MPa 440
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 490
560
Tensile Strength: Ultimate (UTS), MPa 780
790
Tensile Strength: Yield (Proof), MPa 620
350

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
880
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.8
2.6
Embodied Energy, MJ/kg 24
38
Embodied Water, L/kg 57
140

Common Calculations

PREN (Pitting Resistance) 2.7
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
310
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
29
Strength to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 23
17

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.15
Chromium (Cr), % 1.0 to 1.8
16 to 18
Iron (Fe), % 93.4 to 96.6
67.5 to 75
Manganese (Mn), % 0.1 to 0.4
5.5 to 7.5
Molybdenum (Mo), % 0.2 to 0.6
0
Nickel (Ni), % 2.0 to 3.3
3.5 to 5.5
Nitrogen (N), % 0
0.050 to 0.25
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015