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EN 1.4507 Stainless Steel vs. EN 1.4508 Stainless Steel

Both EN 1.4507 stainless steel and EN 1.4508 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a moderately high 92% 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 1.4507 stainless steel and the bottom bar is EN 1.4508 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25
34
Fatigue Strength, MPa 410
210
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 840
570
Tensile Strength: Yield (Proof), MPa 590
260

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 21
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.0
4.0
Embodied Energy, MJ/kg 55
55
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 41
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
160
Resilience: Unit (Modulus of Resilience), kJ/m3 850
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
20
Strength to Weight: Bending, points 25
19
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 23
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26
18 to 20
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 56.4 to 65.8
61.2 to 69.9
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 3.0 to 4.0
3.0 to 3.5
Nickel (Ni), % 6.0 to 8.0
9.0 to 12
Nitrogen (N), % 0.2 to 0.3
0.1 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030