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ASTM FV 520B Details

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FV 520B Application:High strength, high toughness, high abrasion resistance, high corrosion resistance, welding performance is very good

Category Type Grade Microstructure Designations
Grades Stainless Steels FV 520B Precipitation-Hardening USA - ASTM ,

Chemical composition(wt.%) of FV 520B grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.07
Si - 0.70
Mn - 1.00
P - 0.035
S - 0.025
Cr 13.0 15.0
Ni 5.00 6.50
Mo 1.20 2.00
Cu 1.20 2.00
Nb 0.20 0.70
1050 ℃ solid solution treatment + 850 ℃ intermediate + 470 ℃ ageing FV520B steel strength reached the maximum when = FV520B

FV520B has excellent mechanical performance at low temperature, under high temperature tempering has good tensile properties at low temperature.When the temperature of the cooling liquid nitrogen is still keep the room temperature mechanical properties.This is why?Because FV520B austenitic steel has the inverter performance.Low temperature deformation, austenite into martensite, intensity is greatly raised.Different inverter of austenite, the strength is different also.

Mechanical properties of grade FV 520B

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
567 (≥) 441 (≥) 34 21 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical properties of grade FV 520B

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
564 (≥) 616 (≥) 31 13 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 433
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
861 973 769

FV 520B - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
FV 520B ASTM USA
High strength, high toughness, high abrasion resistance, high corrosion resistance, welding performance is very good

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