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EN 1.3956 Stainless Steel vs. EN 1.4630 Stainless Steel

Both EN 1.3956 stainless steel and EN 1.4630 stainless steel are iron alloys. They have 73% 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 1.4630 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
23
Fatigue Strength, MPa 240
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 650
480
Tensile Strength: Yield (Proof), MPa 330
250

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 460
520
Maximum Temperature: Mechanical, °C 1080
800
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.5
Embodied Energy, MJ/kg 68
36
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 34
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
92
Resilience: Unit (Modulus of Resilience), kJ/m3 270
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
17
Strength to Weight: Bending, points 21
18
Thermal Shock Resistance, points 18
17

Alloy Composition

Aluminum (Al), % 0
0 to 1.5
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
13 to 16
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 51.9 to 62.1
77.1 to 86.7
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0 to 0.5
Nickel (Ni), % 11.5 to 13.5
0 to 0.5
Niobium (Nb), % 0.1 to 0.3
0 to 0.5
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.050
Silicon (Si), % 0 to 1.0
0.2 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.8
Vanadium (V), % 0.1 to 0.3
0