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EN 1.3956 Stainless Steel vs. EN 1.4371 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4371 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.3956 stainless steel and the bottom bar is EN 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 27
45 to 51
Fatigue Strength, MPa 240
290 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 650
740 to 750
Tensile Strength: Yield (Proof), MPa 330
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 1080
880
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 22
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.6
Embodied Energy, MJ/kg 68
38
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 34
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 270
250 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
27
Strength to Weight: Bending, points 21
24
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
16 to 17.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 51.9 to 62.1
66.7 to 74.4
Manganese (Mn), % 4.0 to 6.0
6.0 to 8.0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
3.5 to 5.5
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.1 to 0.3
0