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EN 1.4371 Stainless Steel vs. EN 1.4959 Stainless Steel

Both EN 1.4371 stainless steel and EN 1.4959 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is EN 1.4959 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45 to 51
40
Fatigue Strength, MPa 290 to 340
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 520 to 540
430
Tensile Strength: Ultimate (UTS), MPa 740 to 750
630
Tensile Strength: Yield (Proof), MPa 320 to 340
190

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
510
Maximum Temperature: Mechanical, °C 880
1090
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.6
5.4
Embodied Energy, MJ/kg 38
76
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
190
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
96
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 16
15

Alloy Composition

Aluminum (Al), % 0
0.25 to 0.65
Carbon (C), % 0 to 0.030
0.050 to 0.1
Chromium (Cr), % 16 to 17.5
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0 to 1.0
0 to 0.5
Iron (Fe), % 66.7 to 74.4
39.4 to 50.5
Manganese (Mn), % 6.0 to 8.0
0 to 1.5
Nickel (Ni), % 3.5 to 5.5
30 to 34
Nitrogen (N), % 0.15 to 0.25
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0.25 to 0.65