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EN 1.3956 Stainless Steel vs. EN 1.4470 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4470 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 88% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 1.4470 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 27
23
Fatigue Strength, MPa 240
320
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 650
680
Tensile Strength: Yield (Proof), MPa 330
480

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
430
Maximum Temperature: Mechanical, °C 1080
1060
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
17
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.8
3.6
Embodied Energy, MJ/kg 68
49
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 34
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
140
Resilience: Unit (Modulus of Resilience), kJ/m3 270
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
22
Thermal Shock Resistance, points 18
18

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
21 to 23
Iron (Fe), % 51.9 to 62.1
63.7 to 71.9
Manganese (Mn), % 4.0 to 6.0
0 to 2.0
Molybdenum (Mo), % 1.5 to 3.0
2.5 to 3.5
Nickel (Ni), % 11.5 to 13.5
4.5 to 6.5
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0.12 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.1 to 0.3
0