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EN 1.4547 Stainless Steel vs. EN 1.4451 Stainless Steel

Both EN 1.4547 stainless steel and EN 1.4451 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 84% 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 1.4547 stainless steel and the bottom bar is EN 1.4451 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
25
Fatigue Strength, MPa 290
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 750
750
Tensile Strength: Yield (Proof), MPa 340
540

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
17
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 28
20
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.6
3.8
Embodied Energy, MJ/kg 75
53
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 45
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
170
Resilience: Unit (Modulus of Resilience), kJ/m3 290
710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
27
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 3.8
4.5
Thermal Shock Resistance, points 16
16

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19.5 to 20.5
25 to 27
Copper (Cu), % 0.5 to 1.0
2.8 to 3.5
Iron (Fe), % 51 to 56.3
56.2 to 64.6
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 6.0 to 7.0
2.5 to 3.5
Nickel (Ni), % 17.5 to 18.5
5.0 to 7.0
Nitrogen (N), % 0.18 to 0.25
0.12 to 0.22
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.025