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EN 1.6958 Steel vs. S39274 Stainless Steel

Both EN 1.6958 steel and S39274 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 33 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 1.6958 steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 16
17
Fatigue Strength, MPa 700
380
Poisson's Ratio 0.29
0.27
Reduction in Area, % 56
34
Shear Modulus, GPa 73
81
Shear Strength, MPa 700
560
Tensile Strength: Ultimate (UTS), MPa 1140
900
Tensile Strength: Yield (Proof), MPa 1070
620

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 450
1100
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
16
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.0
4.3
Embodied Energy, MJ/kg 27
60
Embodied Water, L/kg 60
180

Common Calculations

PREN (Pitting Resistance) 2.9
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
140
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 40
32
Strength to Weight: Bending, points 31
26
Thermal Diffusivity, mm2/s 13
4.2
Thermal Shock Resistance, points 39
25

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.030
Chromium (Cr), % 1.2 to 1.7
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 92.6 to 94.5
57 to 65.6
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Molybdenum (Mo), % 0.35 to 0.55
2.5 to 3.5
Nickel (Ni), % 3.3 to 3.8
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0.15 to 0.3
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5
Vanadium (V), % 0 to 0.12
0