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EN 1.4988 Stainless Steel vs. EN 1.4854 Stainless Steel

Both EN 1.4988 stainless steel and EN 1.4854 stainless steel are iron alloys. They have 68% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4988 stainless steel and the bottom bar is EN 1.4854 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
45
Fatigue Strength, MPa 230
310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 430
520
Tensile Strength: Ultimate (UTS), MPa 640
750
Tensile Strength: Yield (Proof), MPa 290
340

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Corrosion, °C 520
450
Maximum Temperature: Mechanical, °C 920
1170
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 23
34
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 6.0
5.7
Embodied Energy, MJ/kg 89
81
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 22
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
270
Resilience: Unit (Modulus of Resilience), kJ/m3 210
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
26
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 15.5 to 17.5
24 to 26
Iron (Fe), % 62.1 to 69.5
33.6 to 40.6
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 1.1 to 1.5
0
Nickel (Ni), % 12.5 to 14.5
34 to 36
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0.12 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
1.2 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0.6 to 0.85
0