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EN 1.7703 Steel vs. EN 1.4458 Stainless Steel

Both EN 1.7703 steel and EN 1.4458 stainless steel are iron alloys. They have 51% 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 1.7703 steel and the bottom bar is EN 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
34
Fatigue Strength, MPa 320 to 340
150
Impact Strength: V-Notched Charpy, J 46
67
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 670 to 690
510
Tensile Strength: Yield (Proof), MPa 460 to 500
190

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 460
1100
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
16
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
30
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.5
5.4
Embodied Energy, MJ/kg 35
75
Embodied Water, L/kg 61
200

Common Calculations

PREN (Pitting Resistance) 5.6
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
89
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 11
4.2
Thermal Shock Resistance, points 19 to 20
12

Alloy Composition

Carbon (C), % 0.11 to 0.15
0 to 0.030
Chromium (Cr), % 2.0 to 2.5
19 to 22
Copper (Cu), % 0 to 0.2
0 to 2.0
Iron (Fe), % 94.6 to 96.4
40.2 to 53
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
2.0 to 2.5
Nickel (Ni), % 0 to 0.25
26 to 30
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0 to 0.2
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.025
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0