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EN 1.7710 Steel vs. S40920 Stainless Steel

Both EN 1.7710 steel and S40920 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 31 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 1.7710 steel and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 320
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.8 to 11
22
Fatigue Strength, MPa 500 to 620
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 930 to 1070
430
Tensile Strength: Yield (Proof), MPa 800 to 1060
190

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 440
710
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
26
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
6.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.0
Embodied Energy, MJ/kg 30
28
Embodied Water, L/kg 57
94

Common Calculations

PREN (Pitting Resistance) 4.5
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 73 to 100
78
Resilience: Unit (Modulus of Resilience), kJ/m3 1680 to 2970
97
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 38
15
Strength to Weight: Bending, points 27 to 30
16
Thermal Diffusivity, mm2/s 11
6.9
Thermal Shock Resistance, points 27 to 31
15

Alloy Composition

Carbon (C), % 0.12 to 0.18
0 to 0.030
Chromium (Cr), % 1.3 to 1.8
10.5 to 11.7
Iron (Fe), % 95.1 to 97
85.1 to 89.4
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.0
0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.15 to 0.5
Vanadium (V), % 0.15 to 0.25
0