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EN 1.6956 Steel vs. AISI 304N Stainless Steel

Both EN 1.6956 steel and AISI 304N stainless steel are iron alloys. They have 75% 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 EN 1.6956 steel and the bottom bar is AISI 304N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
190 to 360
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.6
9.1 to 45
Fatigue Strength, MPa 680
220 to 440
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 730
420 to 700
Tensile Strength: Ultimate (UTS), MPa 1230
620 to 1180
Tensile Strength: Yield (Proof), MPa 1120
270 to 850

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
960
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
15
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
3.0
Embodied Energy, MJ/kg 31
43
Embodied Water, L/kg 60
150

Common Calculations

PREN (Pitting Resistance) 2.8
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
98 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
180 to 1830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 43
22 to 42
Strength to Weight: Bending, points 32
21 to 32
Thermal Diffusivity, mm2/s 12
4.2
Thermal Shock Resistance, points 36
14 to 26

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.080
Chromium (Cr), % 1.0 to 1.7
18 to 20
Iron (Fe), % 92.4 to 95.3
66.4 to 73.9
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 2.9 to 3.8
8.0 to 10.5
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0.080 to 0.25
0