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S31254 Stainless Steel vs. EN 1.7390 Steel

Both S31254 stainless steel and EN 1.7390 steel are iron alloys. They have 60% 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 S31254 stainless steel and the bottom bar is EN 1.7390 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
16
Fatigue Strength, MPa 290
310
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
50
Shear Modulus, GPa 80
74
Shear Strength, MPa 490
440
Tensile Strength: Ultimate (UTS), MPa 720
710
Tensile Strength: Yield (Proof), MPa 330
480

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 1090
510
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 28
4.3
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.5
1.7
Embodied Energy, MJ/kg 74
23
Embodied Water, L/kg 190
69

Common Calculations

PREN (Pitting Resistance) 44
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
100
Resilience: Unit (Modulus of Resilience), kJ/m3 270
600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 15
20

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.18
Chromium (Cr), % 19.5 to 20.5
4.0 to 6.0
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
91.9 to 95.3
Manganese (Mn), % 0 to 1.0
0.3 to 0.8
Molybdenum (Mo), % 6.0 to 6.5
0.45 to 0.65
Nickel (Ni), % 17.5 to 18.5
0
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.015