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EN 1.4411 Stainless Steel vs. ASTM A372 Grade K Steel

Both EN 1.4411 stainless steel and ASTM A372 grade K steel are iron alloys. Both are furnished in the quenched and tempered condition. They have 81% 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 1.4411 stainless steel and the bottom bar is ASTM A372 grade K steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
23
Fatigue Strength, MPa 370
440
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 870
780
Tensile Strength: Yield (Proof), MPa 600
620

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
440
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
48
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
4.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
1.8
Embodied Energy, MJ/kg 41
24
Embodied Water, L/kg 130
57

Common Calculations

PREN (Pitting Resistance) 22
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
160
Resilience: Unit (Modulus of Resilience), kJ/m3 920
1010
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31
27
Strength to Weight: Bending, points 26
24
Thermal Diffusivity, mm2/s 4.6
13
Thermal Shock Resistance, points 28
23

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.18
Chromium (Cr), % 15 to 17
1.0 to 1.8
Iron (Fe), % 73.1 to 79.5
93.4 to 96.6
Manganese (Mn), % 0 to 1.0
0.1 to 0.4
Molybdenum (Mo), % 1.5 to 2.0
0.2 to 0.6
Nickel (Ni), % 4.0 to 6.0
2.0 to 3.3
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 0.8
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.010