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EN 1.4971 Stainless Steel vs. AISI 384 Stainless Steel

Both EN 1.4971 stainless steel and AISI 384 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 AISI 384 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
150
Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
76
Tensile Strength: Ultimate (UTS), MPa 800
480

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 570
410
Maximum Temperature: Mechanical, °C 1100
910
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
16
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
20
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 7.6
3.7
Embodied Energy, MJ/kg 110
52
Embodied Water, L/kg 300
150

Common Calculations

PREN (Pitting Resistance) 38
16
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 3.4
4.3
Thermal Shock Resistance, points 19
11

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.040
Chromium (Cr), % 20 to 22.5
15 to 17
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
60.9 to 68
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
17 to 19
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0