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EN 1.7711 Steel vs. EN 1.4125 Stainless Steel

Both EN 1.7711 steel and EN 1.4125 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.7711 steel and the bottom bar is EN 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 280
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16 to 22
19
Fatigue Strength, MPa 290 to 520
300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 440 to 570
500
Tensile Strength: Ultimate (UTS), MPa 690 to 930
800
Tensile Strength: Yield (Proof), MPa 400 to 800
470

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 430
870
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 33
15
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.3
2.3
Embodied Energy, MJ/kg 32
32
Embodied Water, L/kg 54
120

Common Calculations

PREN (Pitting Resistance) 2.9
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 140
130
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1690
570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 33
29
Strength to Weight: Bending, points 22 to 27
25
Thermal Diffusivity, mm2/s 8.9
4.1
Thermal Shock Resistance, points 24 to 32
29

Alloy Composition

Aluminum (Al), % 0 to 0.015
0
Carbon (C), % 0.36 to 0.44
1.0 to 1.2
Chromium (Cr), % 0.9 to 1.2
16 to 18
Iron (Fe), % 96 to 97.5
78 to 82.7
Manganese (Mn), % 0.45 to 0.85
0 to 1.0
Molybdenum (Mo), % 0.5 to 0.65
0.4 to 0.8
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.25 to 0.35
0