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S40977 Stainless Steel vs. EN 1.3956 Stainless Steel

Both S40977 stainless steel and EN 1.3956 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S40977 stainless steel and the bottom bar is EN 1.3956 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
27
Fatigue Strength, MPa 200
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 510
650
Tensile Strength: Yield (Proof), MPa 310
330

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 720
1080
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
13

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
4.8
Embodied Energy, MJ/kg 27
68
Embodied Water, L/kg 97
180

Common Calculations

PREN (Pitting Resistance) 12
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
150
Resilience: Unit (Modulus of Resilience), kJ/m3 250
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
23
Strength to Weight: Bending, points 18
21
Thermal Shock Resistance, points 18
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.060
Chromium (Cr), % 10.5 to 12.5
20.5 to 23.5
Iron (Fe), % 83.9 to 89.2
51.9 to 62.1
Manganese (Mn), % 0 to 1.5
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0.3 to 1.0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0 to 0.030
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3