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EN 1.4021 Stainless Steel vs. EN 1.4307 Stainless Steel

Both EN 1.4021 stainless steel and EN 1.4307 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4021 stainless steel and the bottom bar is EN 1.4307 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
14 to 46
Fatigue Strength, MPa 240 to 380
190 to 320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 390 to 530
410 to 550
Tensile Strength: Ultimate (UTS), MPa 630 to 880
590 to 900
Tensile Strength: Yield (Proof), MPa 390 to 670
200 to 570

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 760
940
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.0
Embodied Energy, MJ/kg 27
43
Embodied Water, L/kg 100
140

Common Calculations

PREN (Pitting Resistance) 13
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 110
110 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 1160
100 to 810
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23 to 31
21 to 32
Strength to Weight: Bending, points 21 to 26
20 to 27
Thermal Diffusivity, mm2/s 8.1
4.0
Thermal Shock Resistance, points 22 to 31
13 to 20

Alloy Composition

Carbon (C), % 0.16 to 0.25
0 to 0.030
Chromium (Cr), % 12 to 14
17.5 to 19.5
Iron (Fe), % 83.2 to 87.8
66.8 to 74.5
Manganese (Mn), % 0 to 1.5
0 to 2.0
Nickel (Ni), % 0
8.0 to 10.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015

Comparable Variants