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Name:SUP10
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Brief introduction: SUP10
Corresponding us brand number: G61500 Corresponding Japanese brand: SUP10 Corresponding German brand number: 50CrV4 British counterpart: 735A51 Corresponding French brand number: 50CV4
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50CrVA spring steel

Standard: GB / T 1222-1984
● Features and Scope:
Good mechanical properties and process performance, high hardenability, adding vanadium steel grain refinement, reduce heat sensitivity, improved strength and toughness, high fatigue strength, yield ratio is high, but poor welding cold plastic deformation due to low. Is a relatively high spring, as a large section of the important spring and high-load operating temperature <300 ℃ of the valve spring, piston spring, safety valve spring
● Chemical Composition:
Carbon C: 0.46 ~ 0.54
Si Si: 0.17 ~ 0.37
Mn Mn: 0.50 ~ 0.80
Sulfur S: ≤0.030
Phosphorus P: ≤0.030
Chromium Cr: 0.80 ~ 1.10
Ni Ni: ≤0.35
Copper Cu: ≤0.25
Vanadium V: 0.10 ~ 0.20
● Mechanical Properties:
Tensile strength σb (MPa): ≥1274 (130)
Yield strength σs (MPa): ≥1127 (115)
Elongation δ5 (%): ≥10
Reduction of area ψ (%): ≥40
Hardness: hot, ≤321HB; Cold Drawn + heat, ≤321HB
● Heat treatment and microstructure specifications:
Heat treatment specifications: quenching 850 ℃ ± 20 ℃, oil cooling; tempering 500 ℃ ± 50 ℃ (when special needs, ± 30 ℃).
● Delivery status: hot-rolled steel to heat treatment or heat treatment delivery, cold drawn steel to heat treatment delivery.


50CrVA Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%) of the 50CrVA
C(%) Si(%) Mn(%) Cr(%) V(%)
0.47-0.54 0.17-0.37 0.50-0.80 0.80-1.10 0.10-0.20

Mechanical properties of grade 50CrVA

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
386 (≥) 139 (≥) 33 33 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical properties of grade 50CrVA

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
154 (≥) 536 (≥) 34 41 44 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
562 657 375 - - -

50CrVA Range of products
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


Corresponding us brand number: G61500
Corresponding Japanese brand: SUP10
Corresponding German brand number: 50CrV4
British counterpart: 735A51
Corresponding French brand number: 50CV4

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