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EN 1.4542 Stainless Steel vs. EN 1.4521 Stainless Steel

Both EN 1.4542 stainless steel and EN 1.4521 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4542 stainless steel and the bottom bar is EN 1.4521 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 20
23
Fatigue Strength, MPa 370 to 640
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 550 to 860
330
Tensile Strength: Ultimate (UTS), MPa 880 to 1470
520
Tensile Strength: Yield (Proof), MPa 580 to 1300
340

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 440
500
Maximum Temperature: Mechanical, °C 860
930
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
23
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 39
39
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 17
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 62 to 160
100
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4360
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 52
19
Strength to Weight: Bending, points 26 to 37
19
Thermal Diffusivity, mm2/s 4.3
6.2
Thermal Shock Resistance, points 29 to 49
18

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.025
Chromium (Cr), % 15 to 17
17 to 20
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 69.6 to 79
74.6 to 81.1
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.6
1.8 to 2.5
Nickel (Ni), % 3.0 to 5.0
0
Niobium (Nb), % 0 to 0.45
0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.8