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EN 1.4945 Stainless Steel vs. EN 1.4311 Stainless Steel

Both EN 1.4945 stainless steel and EN 1.4311 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 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 1.4945 stainless steel and the bottom bar is EN 1.4311 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19 to 34
43
Fatigue Strength, MPa 230 to 350
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 430 to 460
450
Tensile Strength: Ultimate (UTS), MPa 640 to 740
650
Tensile Strength: Yield (Proof), MPa 290 to 550
310

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 520
420
Maximum Temperature: Mechanical, °C 920
950
Melting Completion (Liquidus), °C 1490
1420
Melting Onset (Solidus), °C 1440
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 30
16
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.0
3.1
Embodied Energy, MJ/kg 73
43
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 23
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
230
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 25
23
Strength to Weight: Bending, points 20 to 22
21
Thermal Diffusivity, mm2/s 3.7
4.0
Thermal Shock Resistance, points 14 to 16
15

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
17.5 to 19.5
Iron (Fe), % 57.9 to 65.7
65.7 to 73.9
Manganese (Mn), % 0 to 1.5
0 to 2.0
Nickel (Ni), % 15.5 to 17.5
8.5 to 11.5
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0.12 to 0.22
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.5 to 3.5
0