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EN 1.7703 Steel vs. AISI 415 Stainless Steel

Both EN 1.7703 steel and AISI 415 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.7703 steel and the bottom bar is AISI 415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 320 to 340
430
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 420 to 430
550
Tensile Strength: Ultimate (UTS), MPa 670 to 690
900
Tensile Strength: Yield (Proof), MPa 460 to 500
700

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 460
780
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
24
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
11
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.5
2.5
Embodied Energy, MJ/kg 35
35
Embodied Water, L/kg 61
110

Common Calculations

PREN (Pitting Resistance) 5.6
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
1250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
32
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 11
6.4
Thermal Shock Resistance, points 19 to 20
33

Alloy Composition

Carbon (C), % 0.11 to 0.15
0 to 0.050
Chromium (Cr), % 2.0 to 2.5
11.5 to 14
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
77.8 to 84
Manganese (Mn), % 0.3 to 0.6
0.5 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0.5 to 1.0
Nickel (Ni), % 0 to 0.25
3.5 to 5.5
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 0.6
Sulfur (S), % 0 to 0.0050
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0