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EN 1.7707 Steel vs. EN 1.4443 Stainless Steel

Both EN 1.7707 steel and EN 1.4443 stainless steel are iron alloys. They have 69% 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 1.7707 steel and the bottom bar is EN 1.4443 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
34
Fatigue Strength, MPa 500
170
Impact Strength: V-Notched Charpy, J 31
67
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 1010
490
Tensile Strength: Yield (Proof), MPa 800
210

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 460
1000
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.3
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.9
4.0
Embodied Energy, MJ/kg 27
54
Embodied Water, L/kg 58
160

Common Calculations

PREN (Pitting Resistance) 3.2
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1690
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
17
Strength to Weight: Bending, points 29
18
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 29
11

Alloy Composition

Carbon (C), % 0.26 to 0.34
0 to 0.050
Chromium (Cr), % 2.3 to 2.7
18 to 20
Iron (Fe), % 94.7 to 96.8
60.4 to 69.5
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
2.5 to 3.0
Nickel (Ni), % 0 to 0.6
10 to 13
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0.1 to 0.2
0