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EN 1.7380 Steel vs. S40977 Stainless Steel

Both EN 1.7380 steel and S40977 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 32 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 1.7380 steel and the bottom bar is S40977 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 170
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19 to 20
21
Fatigue Strength, MPa 200 to 230
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 330 to 350
320
Tensile Strength: Ultimate (UTS), MPa 540 to 550
510
Tensile Strength: Yield (Proof), MPa 290 to 330
310

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 460
720
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.9
Embodied Energy, MJ/kg 23
27
Embodied Water, L/kg 59
97

Common Calculations

PREN (Pitting Resistance) 5.6
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 98
92
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 280
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 20
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 11
6.7
Thermal Shock Resistance, points 15 to 16
18

Alloy Composition

Carbon (C), % 0.080 to 0.14
0 to 0.030
Chromium (Cr), % 2.0 to 2.5
10.5 to 12.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.6 to 96.6
83.9 to 89.2
Manganese (Mn), % 0.4 to 0.8
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
0.3 to 1.0
Nitrogen (N), % 0 to 0.012
0 to 0.030
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015