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S20431 Stainless Steel vs. EN 1.7703 Steel

Both S20431 stainless steel and EN 1.7703 steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S20431 stainless steel and the bottom bar is EN 1.7703 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 46
20
Fatigue Strength, MPa 320
320 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 500
420 to 430
Tensile Strength: Ultimate (UTS), MPa 710
670 to 690
Tensile Strength: Yield (Proof), MPa 350
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
460
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1360
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
4.2
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.5
2.5
Embodied Energy, MJ/kg 36
35
Embodied Water, L/kg 140
61

Common Calculations

PREN (Pitting Resistance) 20
5.6
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 310
570 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 15
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.12
0.11 to 0.15
Chromium (Cr), % 17 to 18
2.0 to 2.5
Copper (Cu), % 1.5 to 3.5
0 to 0.2
Iron (Fe), % 66.1 to 74.4
94.6 to 96.4
Manganese (Mn), % 5.0 to 7.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 2.0 to 4.0
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0.1 to 0.25
0 to 0.012
Phosphorus (P), % 0 to 0.045
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
0.25 to 0.35