Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 51crv4 spring steel bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
51CRV4 Spring steel bar
51CRV4 Spring steel bar is suitable for oil hardening and tempering. and when used in the oil hardened and tempered condition. 51CRV4 Spring steel bar gives spring characteristics with good wear and abrasion resistance. Hardened 51CRV4 Spring steel bar offers excellent toughness with shock resistance making it a suitable alloy spring steel for parts exposed to stress, shock and vibration.
51CrV4 steel plate chemical composition
| Grade |
C |
Si Max |
Mn |
P Max |
S Max |
Cr |
V |
|
51CrV4 |
0.47-0.55 |
0.4 |
0.7-1.1 |
0.025 |
0.025 |
0.9-1.2 |
0.10-0.25 |
Equivalent grades of 51CrV4 steel
| EU |
USA |
Germany |
Japan |
France |
Spain |
China |
Sweden |
Poland |
Russia |
Inter |
|
EN |
- |
DIN,WNr |
JIS |
AFNOR |
UNE |
GB |
SS |
PN |
GOST |
ISO |
|
51CrV4 |
6150 |
50CrV4 |
SUP10 |
50CrV4 |
51CrV4 |
50CrVA |
2230 |
50HF |
50KHGFA |
51CrV4 |
|
|
|
|
50CV4 |
F1430 |
|
|
|
|
|
|
|
|
|
|
51CrV4 |
|
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51CrV4 steel Standard
EN 10277-5: 2008 Bright steel products. Technical delivery conditions. Steels for quenching and tempering
EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels
EN 10132-4: 2000 Cold rolled narrow steel strip for heat treatment. Technical delivery conditions. Spring steels and other applications
EN 10089: 2002 Hot rolled steels for quenched and tempered springs. Technical delivery conditions
EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steels
Application fields
has been used in all kinds of areas, such as aviation,aerospace,navigation,nuclear energy,chemical industry,electronic information,achine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments.
| Delivery Condition | Dimensions Range | Hardness | Tensile Strength (Rm) | Yield Point (Re) | Elongation (A) |
|---|---|---|---|---|---|
| +SH or +A+SH | <80mm | <248 HB | - | - | - |
| +C+QT | <16mm | - | 1100 - 1300 MPa | >900 MPa | >9% |
| +C+QT | 16 - 40mm | - | 1000 - 1200 MPa | >800 MPa | >10% |
| +C+QT | 40 - 80mm | - | 900 - 1100 MPa | >700 MPa | >12% |
Our Service
FAQ
Q: Is 51CrV4 the same as 50CrVA?
A: Yes, in most spring applications, they are interchangeable. However, 51CrV4 has a slightly higher carbon and vanadium range. You should check the mill certificate if your drawing specifies tight hardenability or fatigue limits. (Substitution approval must be confirmed by your design engineer; our information is for reference only.)
Q: Do you supply 51CrV4 in the quenched and tempered (+QT) condition?
A: We supply the base bars in the annealed condition for machining, produced at our in-house production base. If you need them already quenched and tempered (+QT), we arrange this through our qualified partner heat treaters. Lead times will be longer, and exact mechanical properties are confirmed before shipping.
Q: How do you control straightness for 6-meter spring bars?
A: We check straightness before packing and use peeled or turned surfaces for long lengths. If you are feeding these into automated coilers, tell us your maximum allowable bend per meter so we can select and pack the straightest bars.
Q: Can I get a 500mm piece for a trial run?
A: Yes, we can cut a sample from stock. You only pay the material cost and courier fee. If you place a bulk order over $1000 within 90 days, the sample cost will be deducted from your invoice.
Q: How do you prevent rust on flat bars during sea freight?
A: We use VCI (Volatile Corrosion Inhibitor) paper inside the bundle and wrap it in plastic film. For long or humid journeys, anti-rust oil is also applied. We never use untreated wood for dunnage to prevent moisture buildup.
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