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|Material:||FV520B S45000 EN 1.4594 DIN X5CrNiMoCuNb14-5 Precipitation Hardening Stainless Steel||Size Range:||Thickness 5.0~150.0mm, Width 3000mm Max.|
|Delivery State:||Annealed||Surface:||Pickled 1D|
FV520B S45000 EN 1.4594 DIN X5CrNiMoCuNb14-5 Hot Rolled Stainless Steel Plate
FV520B is a martensitic precipitation hardening stainless steel. It is similar to the more common
PH grade 17-4PH. It combines moderate corrosion resistance with high strength and moderate toughness.
Approximate Composition – 14% Cr, 5%Ni, 1.5% Mo, 1.5% Cu, 0.05% C plus Nb
(Exact composition ranges vary between EN and ASTM standards. UNS S45000 is a near equivalent).
Chemical composition ( weight % )
BS S 143, FV520B, 1.4594, X5CrNiMoCuNb14-5
|0.07 max||0.60 max||1.00 max||0.035 max||0.025 max||13.2~14.7||5.0~8.0||1.2~2.0||1.2~2.0||0.1~0.4|
This grade combines the following characteristics:
FV520B, like 17-4 PH, develops its high strength from the precipitation of copper particles in its martensitic matrix.
The supply of this grade is complicated by the mismatch between the “traditional” heat treatment conditions and those laid down
in the EN standard. For example, age hardening at 450°C has long been considered to give the maximum strength in this grade.
Yet, no such heat treatment is recognised in EN 10088-3.
The aerospace standards S143/144/145 are closer to established heat treatments.
The combination of high strength and good corrosion resistance finds uses in:
Pump shafts, impellers, fasteners, fans, valves, hydraulic equipment, turbine blades, aerospace, nuclear transport flask, medical devices.
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