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EN 1.4971 Stainless Steel vs. ACI-ASTM CK35MN Steel

Both EN 1.4971 stainless steel and ACI-ASTM CK35MN steel are iron alloys. They have 77% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is ACI-ASTM CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
190
Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
40
Fatigue Strength, MPa 270
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
81
Tensile Strength: Ultimate (UTS), MPa 800
650
Tensile Strength: Yield (Proof), MPa 340
310

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 570
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
31
Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 7.6
5.9
Embodied Energy, MJ/kg 110
81
Embodied Water, L/kg 300
210

Common Calculations

PREN (Pitting Resistance) 38
48
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
210
Resilience: Unit (Modulus of Resilience), kJ/m3 280
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 3.4
3.3
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.035
Chromium (Cr), % 20 to 22.5
22 to 24
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.4
Iron (Fe), % 24.3 to 37.1
43.4 to 51.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
6.0 to 6.8
Nickel (Ni), % 19 to 21
20 to 22
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0.21 to 0.32
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 2.0 to 3.0
0