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EN 1.4951 Stainless Steel vs. S31266 Stainless Steel

Both EN 1.4951 stainless steel and S31266 stainless steel are iron alloys. They have 86% 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 1.4951 stainless steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 38
40
Fatigue Strength, MPa 190
400
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
81
Shear Strength, MPa 430
590
Tensile Strength: Ultimate (UTS), MPa 630
860
Tensile Strength: Yield (Proof), MPa 220
470

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 25
37
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 4.3
6.5
Embodied Energy, MJ/kg 61
89
Embodied Water, L/kg 190
220

Common Calculations

PREN (Pitting Resistance) 26
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
290
Resilience: Unit (Modulus of Resilience), kJ/m3 130
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
29
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 3.9
3.1
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0.040 to 0.080
0 to 0.030
Chromium (Cr), % 24 to 26
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 49.1 to 57
34.1 to 46
Manganese (Mn), % 0 to 2.0
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 19 to 22
21 to 24
Nitrogen (N), % 0 to 0.1
0.35 to 0.6
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5