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EN 1.3956 Stainless Steel vs. EN 1.7703 Steel

Both EN 1.3956 stainless steel and EN 1.7703 steel are iron alloys. They have 61% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 1.7703 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
20
Fatigue Strength, MPa 240
320 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 650
670 to 690
Tensile Strength: Yield (Proof), MPa 330
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1080
460
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
4.2
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.8
2.5
Embodied Energy, MJ/kg 68
35
Embodied Water, L/kg 180
61

Common Calculations

PREN (Pitting Resistance) 34
5.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 270
570 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
22
Thermal Shock Resistance, points 18
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.060
0.11 to 0.15
Chromium (Cr), % 20.5 to 23.5
2.0 to 2.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 51.9 to 62.1
94.6 to 96.4
Manganese (Mn), % 4.0 to 6.0
0.3 to 0.6
Molybdenum (Mo), % 1.5 to 3.0
0.9 to 1.1
Nickel (Ni), % 11.5 to 13.5
0 to 0.25
Niobium (Nb), % 0.1 to 0.3
0 to 0.070
Nitrogen (N), % 0.2 to 0.4
0 to 0.012
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0.25 to 0.35