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AISI 317 Stainless Steel vs. EN 1.8550 Steel

Both AISI 317 stainless steel and EN 1.8550 steel are iron alloys. They have 67% 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 AISI 317 stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
300
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 35 to 55
11
Fatigue Strength, MPa 250 to 330
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 420 to 470
600
Tensile Strength: Ultimate (UTS), MPa 580 to 710
1000
Tensile Strength: Yield (Proof), MPa 250 to 420
760

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 590
440
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 21
3.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.3
1.7
Embodied Energy, MJ/kg 59
23
Embodied Water, L/kg 160
67

Common Calculations

PREN (Pitting Resistance) 31
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
100
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20 to 25
36
Strength to Weight: Bending, points 20 to 22
29
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 12 to 15
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.080
0.3 to 0.37
Chromium (Cr), % 18 to 20
1.5 to 1.8
Iron (Fe), % 58 to 68
94.4 to 96.3
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 3.0 to 4.0
0.15 to 0.25
Nickel (Ni), % 11 to 15
0.85 to 1.2
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035