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EN 1.7725 Steel vs. AISI 316 Stainless Steel

Both EN 1.7725 steel and AISI 316 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 31 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 1.7725 steel and the bottom bar is AISI 316 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
160 to 360
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
8.0 to 55
Fatigue Strength, MPa 390 to 550
210 to 430
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
520 to 1180
Tensile Strength: Yield (Proof), MPa 610 to 860
230 to 850

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
590
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1380
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 7.4
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
7.9
Embodied Carbon, kg CO2/kg material 1.8
3.9
Embodied Energy, MJ/kg 24
53
Embodied Water, L/kg 54
150

Common Calculations

PREN (Pitting Resistance) 2.8
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
85 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
130 to 1820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29 to 35
18 to 41
Strength to Weight: Bending, points 25 to 28
18 to 31
Thermal Diffusivity, mm2/s 11
4.1
Thermal Shock Resistance, points 24 to 29
11 to 26

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.080
Chromium (Cr), % 1.3 to 1.7
16 to 18
Iron (Fe), % 95.7 to 97.5
62 to 72
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.5
2.0 to 3.0
Nickel (Ni), % 0
10 to 14
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.050 to 0.15
0

Comparable Variants