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EN 1.4887 Stainless Steel vs. EN 1.4306 Stainless Steel

Both EN 1.4887 stainless steel and EN 1.4306 stainless steel are iron alloys. They have 71% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4887 stainless steel and the bottom bar is EN 1.4306 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
14 to 45
Fatigue Strength, MPa 280
190 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 400
400 to 550
Tensile Strength: Ultimate (UTS), MPa 580
580 to 900
Tensile Strength: Yield (Proof), MPa 300
210 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 600
420
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1390
1420
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 39
16
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.7
3.2
Embodied Energy, MJ/kg 96
45
Embodied Water, L/kg 210
150

Common Calculations

PREN (Pitting Resistance) 22
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
110 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 230
110 to 820
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
21 to 32
Strength to Weight: Bending, points 19
20 to 27
Thermal Diffusivity, mm2/s 3.2
4.0
Thermal Shock Resistance, points 14
13 to 20

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 20 to 23
18 to 20
Iron (Fe), % 34.2 to 45
64.8 to 72
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 33 to 37
10 to 12
Niobium (Nb), % 1.0 to 1.5
0
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015