Spring Stainless Steel Strip

Description

Product Description

Spring stainless steel strip is produced by cold rolling stainless steel to a hardened condition (1/2H, 3/4H, Full Hard, or Spring Temper). It is characterized by high yield strength, excellent elasticity, and formability under load.

Spring-grade stainless steel strips are widely used in components that require repeated flexing or load-bearing, such as clips, springs, washers, fasteners, and blade parts. Available in grades such as 301, 304, 316, 420, and 17-7PH, these strips combine high mechanical strength with resistance to wear, corrosion, and heat.

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Specifications of Spring Stainless Steel Strip

Property	Value
Thickness	0.03 mm – 2.5 mm
Width	5 mm – 600 mm
Temper	1/2 Hard, 3/4 Hard, Full Hard, Spring Hard
Edge Options	Slit Edge / Deburred / Round Edge
Finish Options	2B, BA, No.4, Mirror (8K), Bright Polished
Packaging	Coil form, sealed with rust-proof wrap + pallet/crate

Mechanical Properties (Typical – 301 Full Hard)

Property	Value
Tensile Strength	≥ 930 MPa
Yield Strength	≥ 690 MPa
Elongation	~6–8%
Hardness	HV 330–420

Note: Properties vary by grade and temper.

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Key Features of Spring Stainless Steel Strip

• High yield strength and fatigue resistance

• Good elasticity and springback performance

• Excellent surface finish for precision stamping

• Resistant to corrosion, oxidation, and wear

• Non-magnetic (301, 304 in annealed condition), magnetic (17-7PH, 420, etc.)

• Available in custom slit widths and edge finishes

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Common Grades for Spring Strip

Grade	Type	Characteristics
301	Austenitic	Excellent elasticity, cold-worked hardening
304/304L	Austenitic	Corrosion-resistant, moderate strength
316/316L	Austenitic	Better corrosion resistance, marine-grade
420	Martensitic	Wear and edge retention, magnetic
17-7PH	Precipitation-Hardened	High strength, heat treatable, good spring properties

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Applications of Spring Stainless Steel Strip

• Springs and clips

• Battery contact strips

• Retainers and brackets

• Shims and spacers

• Precision stamped parts

• Blades and cutting tools

• Electrical connectors and terminals

• Automotive suspension or fastener parts

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FAQs – Spring Stainless Steel Strip

Q1: What is the difference between regular and spring stainless steel strip?
A: Spring stainless steel strip is cold-worked to a hardened temper, providing much higher yield strength and resilience compared to regular annealed strip.

Q2: Can you supply custom slit spring strips?
A: Yes, we can slit to your exact width requirements, as narrow as 5 mm, with precision edge finishing.

Q3: What grades are best for corrosion-resistant spring strips?
A: 316, 301, and 17-7PH offer excellent corrosion resistance. 17-7PH also allows for heat treatment to improve spring performance.

Q4: Are these strips magnetic?
A: Austenitic grades like 301 and 304 are non-magnetic when annealed, but may become slightly magnetic after cold working. Martensitic and PH grades like 420 and 17-7PH are magnetic.

Q5: What industries use spring stainless steel strip?
A: Automotive, electronics, aerospace, medical, consumer products, defense, and industrial manufacturing.

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Get in Touch – Request Quote or Sample

Looking for a reliable stainless steel supplier in China? Gengfei Steel is your trusted source. Contact our team now for free samples, pricing, or custom production support.