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EN 1.4306 Stainless Steel vs. EN 1.4981 Stainless Steel

Both EN 1.4306 stainless steel and EN 1.4981 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4306 stainless steel and the bottom bar is EN 1.4981 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 45
39
Fatigue Strength, MPa 190 to 330
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 400 to 550
420
Tensile Strength: Ultimate (UTS), MPa 580 to 900
610
Tensile Strength: Yield (Proof), MPa 210 to 570
240

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
520
Maximum Temperature: Mechanical, °C 960
940
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
25
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
4.8
Embodied Energy, MJ/kg 45
67
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 20
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 200
190
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 820
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 32
21
Strength to Weight: Bending, points 20 to 27
20
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 13 to 20
14

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.1
Chromium (Cr), % 18 to 20
15.5 to 17.5
Iron (Fe), % 64.8 to 72
59.6 to 66.7
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
1.6 to 2.0
Nickel (Ni), % 10 to 12
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0.3 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.015