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EN 1.4912 Stainless Steel vs. S31254 Stainless Steel

Both EN 1.4912 stainless steel and S31254 stainless steel are iron alloys. They have 83% 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 1.4912 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
40
Fatigue Strength, MPa 200
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 420
490
Tensile Strength: Ultimate (UTS), MPa 610
720
Tensile Strength: Yield (Proof), MPa 230
330

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
420
Maximum Temperature: Mechanical, °C 940
1090
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
28
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.8
5.5
Embodied Energy, MJ/kg 55
74
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 18
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
240
Resilience: Unit (Modulus of Resilience), kJ/m3 130
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 4.2
3.8
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.020
Chromium (Cr), % 17 to 19
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 64.6 to 73.6
51.4 to 56.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 9.0 to 12
17.5 to 18.5
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.010