Loading Port:China Main Port
Payment Terms:TT or LC
Min Order Qty:50MT m.t.
Supply Capability:600000TONS/YEAR m.t./month
Spring Steel:
Spring steel is divided into two types, one is alloy spring steel, and other one is carbon spring steel.
Alloy spring steel is a type that is used for manufacturing springs and other elastic parts. Spring steel should have high elastic limit and ratio of yield strength and tensile strength to make sure that the springs obtain enough power of elastic deformation and can bear much load.
Types of alloy spring steel: Si-Mn spring steel, Si-Cr spring steel, Cr-Mn Spring steel, Cr-V spring steel and so on.
Specification of Spring Steel Strip
-Material: 50CrVA
-Standard: GB/T 1222-2007
-Type: Spring Steel
Corresponding Steel Grade for Reference:
CHN, GB | JPN, JIS | GER, DIN |
50CrVA | SUP10 | 50CrV4 |
GBR, BS | FRA,FN | |
735A51 | 50CV4 |
Chemical Composition:
C | Si | Mn |
0.46~0.54 | 0.17~0.37 | 0.50~0.80 |
S | P | Cr |
≤0.030 | ≤0.030 | 0.80~1.10 |
Ni | Cu | V |
≤0.35 | ≤0.25 | 0.10~0.20 |
Mechanical Properties:
-Tensile Strength σb (MPa): ≥1274 (130)
-Yield Strength σs (MPa): ≥1127 (115)
-Elongation δ5 (%):≥10
-Percentage reduction of area: ψ (%): ≥40
-Hardness:
1, Hot rolled, ≤321HB
2, Cold drawn + Heat treatment: ≤321HB
-Norm of heat treatment:
1, Quenching: 850℃±20℃.
2, Cooled by oil.
3, Tempering: 500℃±50℃.
Usage/Applications of Spring Steel Strip
-Mechanical Properties are good. 50CrVA have high hardenability. The element V reduces thermal sensitivity and improves the strength and toughness. The fatigue strength and yield point are high but the weld ability is bad.
-50CrVA is a nice material of spring. Usually it’s used as valve spring, piston spring and secure valve spring with big section that can bear much load. The working temperature is below 300℃
Packaging & Delivery of Spring Steel Strip:
-Packing Detail: The products will be well packed.
-Marks:
1, Tag marks. To show customers the specifications of products, company name and logo and other information required by customers.
2, Color marks. It’s easy for customers to distinguish them from other products at destination port.
-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.
Payment:
-Theoretical weight/Actual weight.
-FOB, CFR or CIF.
-Terms of payment: T.T. or L/C at sight.
Photos of Spring Steel Strip:
