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EN 1.4371 Stainless Steel vs. EN 1.4887 Stainless Steel

Both EN 1.4371 stainless steel and EN 1.4887 stainless steel are iron alloys. They have 62% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is EN 1.4887 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45 to 51
45
Fatigue Strength, MPa 290 to 340
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 520 to 540
400
Tensile Strength: Ultimate (UTS), MPa 740 to 750
580
Tensile Strength: Yield (Proof), MPa 320 to 340
300

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 410
600
Maximum Temperature: Mechanical, °C 880
1100
Melting Completion (Liquidus), °C 1410
1390
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
39
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.6
6.7
Embodied Energy, MJ/kg 38
96
Embodied Water, L/kg 140
210

Common Calculations

PREN (Pitting Resistance) 20
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
220
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
20
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 16 to 17.5
20 to 23
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 66.7 to 74.4
34.2 to 45
Manganese (Mn), % 6.0 to 8.0
0 to 2.0
Nickel (Ni), % 3.5 to 5.5
33 to 37
Niobium (Nb), % 0
1.0 to 1.5
Nitrogen (N), % 0.15 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
1.0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.015