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EN 1.4859 Stainless Steel vs. EN 1.4458 Stainless Steel

Both EN 1.4859 stainless steel and EN 1.4458 stainless steel are iron alloys. They have a moderately high 94% 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 1.4859 stainless steel and the bottom bar is EN 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
34
Fatigue Strength, MPa 140
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 490
510
Tensile Strength: Yield (Proof), MPa 210
190

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 560
430
Maximum Temperature: Mechanical, °C 1050
1100
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 13
16
Thermal Expansion, µm/m-K 16
15

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 36
30
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 6.2
5.4
Embodied Energy, MJ/kg 88
75
Embodied Water, L/kg 190
200

Common Calculations

PREN (Pitting Resistance) 21
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
140
Resilience: Unit (Modulus of Resilience), kJ/m3 110
89
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 3.4
4.2
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
19 to 22
Copper (Cu), % 0
0 to 2.0
Iron (Fe), % 40.3 to 49
40.2 to 53
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 2.5
Nickel (Ni), % 31 to 33
26 to 30
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025