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EN 1.7703 Steel vs. S38815 Stainless Steel

Both EN 1.7703 steel and S38815 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.7703 steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
34
Fatigue Strength, MPa 320 to 340
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 420 to 430
410
Tensile Strength: Ultimate (UTS), MPa 670 to 690
610
Tensile Strength: Yield (Proof), MPa 460 to 500
290

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 460
860
Melting Completion (Liquidus), °C 1470
1360
Melting Onset (Solidus), °C 1430
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
19
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 2.5
3.8
Embodied Energy, MJ/kg 35
54
Embodied Water, L/kg 61
140

Common Calculations

PREN (Pitting Resistance) 5.6
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
170
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
21
Thermal Shock Resistance, points 19 to 20
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.11 to 0.15
0 to 0.030
Chromium (Cr), % 2.0 to 2.5
13 to 15
Copper (Cu), % 0 to 0.2
0.75 to 1.5
Iron (Fe), % 94.6 to 96.4
56.1 to 67
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
0.75 to 1.5
Nickel (Ni), % 0 to 0.25
13 to 17
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.1
5.5 to 6.5
Sulfur (S), % 0 to 0.0050
0 to 0.020
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0