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EN 1.4945 Stainless Steel vs. EN 1.4634 Stainless Steel

Both EN 1.4945 stainless steel and EN 1.4634 stainless steel are iron alloys. They have 80% 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 1.4945 stainless steel and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 19 to 34
21
Fatigue Strength, MPa 230 to 350
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 430 to 460
340
Tensile Strength: Ultimate (UTS), MPa 640 to 740
540
Tensile Strength: Yield (Proof), MPa 290 to 550
280

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 520
500
Maximum Temperature: Mechanical, °C 920
900
Melting Completion (Liquidus), °C 1490
1430
Melting Onset (Solidus), °C 1440
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 30
13
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 5.0
2.9
Embodied Energy, MJ/kg 73
42
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 23
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
93
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 25
20
Strength to Weight: Bending, points 20 to 22
19
Thermal Diffusivity, mm2/s 3.7
5.8
Thermal Shock Resistance, points 14 to 16
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0.040 to 0.1
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
17.5 to 18.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 57.9 to 65.7
74.9 to 81.8
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 15.5 to 17.5
0 to 0.5
Niobium (Nb), % 0.4 to 1.2
0.3 to 1.0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0.3 to 0.6
0.2 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.050
Tungsten (W), % 2.5 to 3.5
0