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EN 1.4150 Stainless Steel vs. AISI 317 Stainless Steel

Both EN 1.4150 stainless steel and AISI 317 stainless steel are iron alloys. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4150 stainless steel and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
35 to 55
Fatigue Strength, MPa 270
250 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Shear Strength, MPa 460
420 to 470
Tensile Strength: Ultimate (UTS), MPa 730
580 to 710
Tensile Strength: Yield (Proof), MPa 430
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 840
590
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
21
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 2.8
4.3
Embodied Energy, MJ/kg 42
59
Embodied Water, L/kg 120
160

Common Calculations

PREN (Pitting Resistance) 19
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
210 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 470
150 to 430
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
20 to 25
Strength to Weight: Bending, points 24
20 to 22
Thermal Diffusivity, mm2/s 6.2
4.1
Thermal Shock Resistance, points 27
12 to 15

Alloy Composition

Carbon (C), % 0.45 to 0.6
0 to 0.080
Chromium (Cr), % 15 to 16.5
18 to 20
Iron (Fe), % 79 to 82.8
58 to 68
Manganese (Mn), % 0 to 0.8
0 to 2.0
Molybdenum (Mo), % 0.2 to 0.4
3.0 to 4.0
Nickel (Ni), % 0 to 0.4
11 to 15
Nitrogen (N), % 0.050 to 0.2
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 1.3 to 1.7
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0.2 to 0.4
0