Stainless steel spring wire is a specific type of steel wire engineered for manufacturing springs. It combines the inherent corrosion resistance of stainless steel with the high tensile strength, elasticity, and fatigue resistance required for spring applications. This wire is typically produced through a cold drawing process, which significantly increases its strength and provides the necessary spring properties.
Key characteristics of stainless steel spring wire include:
- Corrosion Resistance: Its primary advantage over carbon steel spring wire, making it suitable for environments exposed to moisture, chemicals, or varying temperatures.
- High Tensile Strength: Achieved through work hardening during the drawing process, allowing the wire to withstand high stresses without permanent deformation.
- Good Elasticity: The ability to return to its original shape after being deflected or stretched.
- Fatigue Strength: Resistance to failure under repeated loading cycles, crucial for the longevity of a spring.
- Temperature Resistance: Certain grades maintain their properties at elevated or cryogenic temperatures better than carbon steels.
Common grades used for stainless steel spring wire include AISI 302, 304, 316, and 17-7PH. The choice of grade depends on the specific requirements of the application, such as the level of corrosion resistance needed, operating temperature, and required strength. It’s widely used in automotive, aerospace, medical devices, electronics, and consumer goods industries where reliability and corrosion resistance are paramount.
What is stainless steel spring wire? — This article provides a practical buyer‑focused overview with specifications, selection tips, and on‑site considerations. Explore related topics: blog.
Key Specifications and Standards
- Standards: ASTM / EN / JIS (e.g., ASTM A240/A36, EN 10088/10025, JIS G4304/G3131).
- Surface options: 2B, BA, No.4, HL, mirror; galvanized (electro / hot‑dip).
- Processing: hot‑rolled, cold‑rolled, annealed & pickled, welded or seamless.
- Typical services: slitting, shearing, cut‑to‑length, drilling, beveling, deburring.
- Documentation: MTC, CO, packing list with net/gross weight and heat numbers.
Typical Applications
Construction, machinery, automotive, energy, enclosures and fencing, food equipment (for stainless), and general fabrication. Match grade and finish to corrosion, strength, and appearance requirements.
Selection Guide
- Use certified material with Mill Test Certificate (MTC).
- Confirm standards (ASTM/EN/JIS) and tolerances per drawing.
- Match surface finish to application (2B/BA/No.4/galvanized).
- Specify dimensions and acceptable deviation upfront.
- Plan packaging and corrosion protection for transit.
Processing, Packaging and Logistics
We adopt edge protection, waterproof wrapping, rust‑inhibiting paper, fumigated pallets, and strapping suitable for sea freight. Loading photos and weight lists are provided for each shipment.
FAQs
Q: What lead time can I expect?
A: Typically 7–15 days ex‑works for standard sizes; custom processing may extend the schedule.
Q: Can you provide cut‑to‑size service?
A: Yes. We slit, shear, cut, drill, bevel and deburr to drawing to reduce waste and speed installation.
Q: How do you ensure quality?
A: Incoming inspection, process control, and final inspection with traceable heat numbers; third‑party inspection is available.
Q: Do you support small trial orders?
A: We support pilot quantities with consolidated shipping to control cost.
All values are typical and for guidance only; confirm with the datasheet and purchase order before production.
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