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EN 1.4371 Stainless Steel vs. EN 1.7707 Steel

Both EN 1.4371 stainless steel and EN 1.7707 steel are iron alloys. They have 74% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is EN 1.7707 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
300
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45 to 51
11
Fatigue Strength, MPa 290 to 340
500
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 520 to 540
600
Tensile Strength: Ultimate (UTS), MPa 740 to 750
1010
Tensile Strength: Yield (Proof), MPa 320 to 340
800

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
460
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
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 2.5
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.9
Embodied Energy, MJ/kg 38
27
Embodied Water, L/kg 140
58

Common Calculations

PREN (Pitting Resistance) 20
3.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
110
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
1690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
36
Strength to Weight: Bending, points 24
29
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 16
29

Alloy Composition

Carbon (C), % 0 to 0.030
0.26 to 0.34
Chromium (Cr), % 16 to 17.5
2.3 to 2.7
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 66.7 to 74.4
94.7 to 96.8
Manganese (Mn), % 6.0 to 8.0
0.4 to 0.7
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 3.5 to 5.5
0 to 0.6
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035
Vanadium (V), % 0
0.1 to 0.2