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EN 1.4550 Stainless Steel vs. EN 1.4982 Stainless Steel

Both EN 1.4550 stainless steel and EN 1.4982 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4550 stainless steel and the bottom bar is EN 1.4982 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
28
Fatigue Strength, MPa 210
420
Impact Strength: V-Notched Charpy, J 90
57
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 430
490
Tensile Strength: Ultimate (UTS), MPa 620
750
Tensile Strength: Yield (Proof), MPa 230
570

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 480
540
Maximum Temperature: Mechanical, °C 940
860
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 18
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
4.9
Embodied Energy, MJ/kg 51
71
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 18
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
190
Resilience: Unit (Modulus of Resilience), kJ/m3 140
830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
27
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 4.0
3.4
Thermal Shock Resistance, points 14
17

Alloy Composition

Boron (B), % 0
0.0030 to 0.0090
Carbon (C), % 0 to 0.080
0.070 to 0.13
Chromium (Cr), % 17 to 19
14 to 16
Iron (Fe), % 64.9 to 74
61.8 to 69.7
Manganese (Mn), % 0 to 2.0
5.5 to 7.0
Molybdenum (Mo), % 0
0.8 to 1.2
Nickel (Ni), % 9.0 to 12
9.0 to 11
Niobium (Nb), % 0 to 1.0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.15 to 0.4