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EN 1.4872 Stainless Steel vs. EN 1.4640 Stainless Steel

Both EN 1.4872 stainless steel and EN 1.4640 stainless steel are iron alloys. They have 86% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4872 stainless steel and the bottom bar is EN 1.4640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
51
Fatigue Strength, MPa 410
230 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 620
440 to 460
Tensile Strength: Ultimate (UTS), MPa 950
620 to 650
Tensile Strength: Yield (Proof), MPa 560
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1150
930
Melting Completion (Liquidus), °C 1390
1420
Melting Onset (Solidus), °C 1340
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 17
14
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 47
40
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 30
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
250 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 780
150 to 170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 35
22 to 23
Strength to Weight: Bending, points 28
21
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 21
14 to 15

Alloy Composition

Carbon (C), % 0.2 to 0.3
0.030 to 0.080
Chromium (Cr), % 24 to 26
18 to 19
Copper (Cu), % 0
1.3 to 2.0
Iron (Fe), % 54.2 to 61.6
67.4 to 73.6
Manganese (Mn), % 8.0 to 10
1.5 to 4.0
Nickel (Ni), % 6.0 to 8.0
5.5 to 6.9
Nitrogen (N), % 0.2 to 0.4
0.030 to 0.11
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015