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S31277 Stainless Steel vs. EN 1.7729 Steel

Both S31277 stainless steel and EN 1.7729 steel are iron alloys. They have 44% of their average alloy composition in common. There are 27 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 S31277 stainless steel and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
17
Fatigue Strength, MPa 380
500
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Shear Strength, MPa 600
560
Tensile Strength: Ultimate (UTS), MPa 860
910
Tensile Strength: Yield (Proof), MPa 410
750

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
430
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 36
3.8
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.7
3.3
Embodied Energy, MJ/kg 90
49
Embodied Water, L/kg 220
59

Common Calculations

PREN (Pitting Resistance) 51
4.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
150
Resilience: Unit (Modulus of Resilience), kJ/m3 410
1500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
32
Strength to Weight: Bending, points 25
27
Thermal Shock Resistance, points 19
27

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0 to 0.020
0.17 to 0.23
Chromium (Cr), % 20.5 to 23
0.9 to 1.2
Copper (Cu), % 0.5 to 1.5
0 to 0.2
Iron (Fe), % 35.5 to 46.2
94.8 to 97
Manganese (Mn), % 0 to 3.0
0.35 to 0.75
Molybdenum (Mo), % 6.5 to 8.0
0.9 to 1.1
Nickel (Ni), % 26 to 28
0 to 0.2
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0
0.070 to 0.15
Vanadium (V), % 0
0.6 to 0.8