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EN 1.4857 Stainless Steel vs. EN 1.4825 Stainless Steel

Both EN 1.4857 stainless steel and EN 1.4825 stainless steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 67% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4857 stainless steel and the bottom bar is EN 1.4825 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.7
17
Fatigue Strength, MPa 120
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 500
510
Tensile Strength: Yield (Proof), MPa 250
260

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1370
1410
Melting Onset (Solidus), °C 1320
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 34
15
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 5.7
3.1
Embodied Energy, MJ/kg 81
43
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 26
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
72
Resilience: Unit (Modulus of Resilience), kJ/m3 150
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 11
12

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.15 to 0.35
Chromium (Cr), % 24 to 27
17 to 19
Iron (Fe), % 31.4 to 41.7
65.6 to 74.4
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 33 to 36
8.0 to 10
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
0.5 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030