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EN 1.7725 Steel vs. S32803 Stainless Steel

Both EN 1.7725 steel and S32803 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 31 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 1.7725 steel and the bottom bar is S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
210
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 14
18
Fatigue Strength, MPa 390 to 550
350
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
680
Tensile Strength: Yield (Proof), MPa 610 to 860
560

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
16
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
19
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.8
3.7
Embodied Energy, MJ/kg 24
53
Embodied Water, L/kg 54
180

Common Calculations

PREN (Pitting Resistance) 2.8
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
760
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29 to 35
25
Strength to Weight: Bending, points 25 to 28
22
Thermal Diffusivity, mm2/s 11
4.4
Thermal Shock Resistance, points 24 to 29
22

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.015
Chromium (Cr), % 1.3 to 1.7
28 to 29
Iron (Fe), % 95.7 to 97.5
62.9 to 67.1
Manganese (Mn), % 0.6 to 1.0
0 to 0.5
Molybdenum (Mo), % 0.3 to 0.5
1.8 to 2.5
Nickel (Ni), % 0
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.0035
Vanadium (V), % 0.050 to 0.15
0