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EN 1.3956 Stainless Steel vs. EN 1.4910 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4910 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 90% 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 EN 1.3956 stainless steel and the bottom bar is EN 1.4910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 27
41
Fatigue Strength, MPa 240
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 650
650
Tensile Strength: Yield (Proof), MPa 330
290

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 1080
950
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.8
3.9
Embodied Energy, MJ/kg 68
54
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 34
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
220
Resilience: Unit (Modulus of Resilience), kJ/m3 270
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
23
Strength to Weight: Bending, points 21
21
Thermal Shock Resistance, points 18
14

Alloy Composition

Boron (B), % 0
0.0015 to 0.0050
Carbon (C), % 0 to 0.060
0 to 0.040
Chromium (Cr), % 20.5 to 23.5
16 to 18
Iron (Fe), % 51.9 to 62.1
62 to 69.9
Manganese (Mn), % 4.0 to 6.0
0 to 2.0
Molybdenum (Mo), % 1.5 to 3.0
2.0 to 3.0
Nickel (Ni), % 11.5 to 13.5
12 to 14
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0.1 to 0.18
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.1 to 0.3
0