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EN 1.7706 Steel vs. AISI 317LN Stainless Steel

Both EN 1.7706 steel and AISI 317LN stainless steel are iron alloys. They have 66% 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 1.7706 steel and the bottom bar is AISI 317LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 330
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 690
620
Tensile Strength: Yield (Proof), MPa 500
270

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 440
1010
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
21
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.3
4.3
Embodied Energy, MJ/kg 32
59
Embodied Water, L/kg 57
160

Common Calculations

PREN (Pitting Resistance) 4.7
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 670
190
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
20
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 20
14

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 1.2 to 1.5
18 to 20
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.7 to 97.1
57.9 to 67.9
Manganese (Mn), % 0.5 to 0.9
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.1
3.0 to 4.0
Nickel (Ni), % 0 to 0.4
11 to 15
Nitrogen (N), % 0
0.1 to 0.22
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.2 to 0.3
0