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EN 1.4659 Stainless Steel vs. EN 1.4008 Stainless Steel

Both EN 1.4659 stainless steel and EN 1.4008 stainless steel are iron alloys. They have 56% 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 1.4659 stainless steel and the bottom bar is EN 1.4008 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 49
17
Fatigue Strength, MPa 460
300
Impact Strength: V-Notched Charpy, J 94
31
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
76
Tensile Strength: Ultimate (UTS), MPa 900
670
Tensile Strength: Yield (Proof), MPa 480
500

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
760
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
25
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
8.0
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 6.5
2.1
Embodied Energy, MJ/kg 89
30
Embodied Water, L/kg 220
100

Common Calculations

PREN (Pitting Resistance) 54
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 370
100
Resilience: Unit (Modulus of Resilience), kJ/m3 550
630
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 31
24
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 3.2
6.7
Thermal Shock Resistance, points 19
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.1
Chromium (Cr), % 23 to 25
12 to 13.5
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 35.7 to 45.7
81.8 to 86.8
Manganese (Mn), % 2.0 to 4.0
0 to 1.0
Molybdenum (Mo), % 5.5 to 6.5
0.2 to 0.5
Nickel (Ni), % 21 to 23
1.0 to 2.0
Nitrogen (N), % 0.35 to 0.5
0
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
Tungsten (W), % 1.5 to 2.5
0