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EN 1.3955 Stainless Steel vs. S39277 Stainless Steel

Both EN 1.3955 stainless steel and S39277 stainless steel are iron alloys. They have 87% 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 1.3955 stainless steel and the bottom bar is S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
28
Fatigue Strength, MPa 150
480
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 520
930
Tensile Strength: Yield (Proof), MPa 220
660

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
4.2
Embodied Energy, MJ/kg 45
59
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 19
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
240
Resilience: Unit (Modulus of Resilience), kJ/m3 130
1070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
33
Strength to Weight: Bending, points 18
27
Thermal Diffusivity, mm2/s 4.1
4.2
Thermal Shock Resistance, points 15
26

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.025
Chromium (Cr), % 16.5 to 18.5
24 to 26
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 65.5 to 73.5
56.8 to 64.3
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 0 to 0.75
3.0 to 4.0
Nickel (Ni), % 10 to 12
6.5 to 8.0
Nitrogen (N), % 0
0.23 to 0.33
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.0020
Tungsten (W), % 0
0.8 to 1.2