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EN 1.4971 Stainless Steel vs. EN 1.4618 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4618 stainless steel are iron alloys. They have 55% of their average alloy composition in common. There are 31 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 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
51
Fatigue Strength, MPa 270
240 to 250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 530
480 to 500
Tensile Strength: Ultimate (UTS), MPa 800
680 to 700
Tensile Strength: Yield (Proof), MPa 340
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 570
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.7
Embodied Energy, MJ/kg 110
39
Embodied Water, L/kg 300
150

Common Calculations

PREN (Pitting Resistance) 38
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 280
160 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
24 to 25
Strength to Weight: Bending, points 23
22 to 23
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 19
15 to 16

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.1
Chromium (Cr), % 20 to 22.5
16.5 to 18.5
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 24.3 to 37.1
62.7 to 72.5
Manganese (Mn), % 0 to 2.0
5.5 to 9.5
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
4.5 to 5.5
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.15
Phosphorus (P), % 0 to 0.035
0 to 0.070
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 2.0 to 3.0
0