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EN 1.4971 Stainless Steel vs. EN 1.4655 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4655 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is EN 1.4655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
23 to 25
Fatigue Strength, MPa 270
320
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 81
78
Shear Strength, MPa 530
460
Tensile Strength: Ultimate (UTS), MPa 800
720 to 730
Tensile Strength: Yield (Proof), MPa 340
450 to 480

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 570
440
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
15
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.9
Embodied Energy, MJ/kg 110
41
Embodied Water, L/kg 300
160

Common Calculations

PREN (Pitting Resistance) 38
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
150 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
510 to 580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 19
20

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.030
Chromium (Cr), % 20 to 22.5
22 to 24
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
1.0 to 3.0
Iron (Fe), % 24.3 to 37.1
63.6 to 73.4
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0.1 to 0.6
Nickel (Ni), % 19 to 21
3.5 to 5.5
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0.050 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.0 to 3.0
0