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High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
Specifications
MOQ :
Negotiable
Place of Origin :
Sihong, China
Brand Name :
Sunzo
Certification :
CE/IATF16949/45001/14001/9001
Price :
Negotiable
Packaging Details :
Carton
Delivery Time :
Negotiable
Payment Terms :
Negotiable
Model NO. :
SUNZO
Function :
Pressed, Phonation, Drive, Restoration, Measurement
Material :
Steel
Load Type :
Compression
Production Process :
Hot Roll
Shape :
Flat
Specification :
SUS 302
Tensile Strength :
1800 MPa
Corrosion Resistance :
500+ hours (ASTM B117)
Hardness :
42-45 HRC
Temperature Range :
-40°C to 200°C
Fatigue Life :
10⁷ cycles
Yield Strength :
70%
Load Tolerance :
±1.5%
Material Grade :
ASTM A228, 316L, Cr-V
SPC Cpk :
1.67
Inspection Speed :
200+ data points per second
Non-conformity Rate :
0.002% ppm
Metallurgical Analysis :
ISO 17025 accredited
Thermal Shock :
-40°C to 200°C
Description
ISO 9001 Certified Helical Spring
Quality serves as the cornerstone of industrial trust, and our Helical Compression Springs are certified under ISO 9001:2015—the globally recognized benchmark for quality management systems. This certification validates our unwavering commitment to delivering products that consistently meet international standards across 12 critical quality management clauses, from customer focus to continuous improvement.
Quality Assurance Framework
Our quality assurance framework integrates advanced technologies and rigorous protocols to ensure every spring meets or exceeds industry requirements:
  • Raw Material Qualification: Supplier audits and material traceability with spectroscopic analysis, tensile strength testing (minimum 1800 MPa), and corrosion resistance verification
  • In-Process Quality Control: Real-time SPC with Cpk values maintained above 1.67 for critical dimensions and automated vision systems inspecting coil geometry at 200+ data points per second
  • Finished Product Testing: Comprehensive protocols including load-deflection testing (±1.5% tolerance), fatigue life cycling (10⁷ cycles at 70% of yield strength), and environmental conditioning (-40°C to 200°C thermal shock)
Laboratory Validation
Our ISO 17025 accredited lab further validates performance through:
  • Metallurgical analysis
  • Hardness testing (42-45 HRC)
  • Fracture toughness evaluations
Industry Applications
This rigorous quality ecosystem enables our springs to excel across multiple industries:
Industry Compliance Standards
Automotive Safety Systems ISO 19403 durability standards
Medical Devices FDA Class VI biocompatibility
Aerospace Components AS9100D compliance
Material Specifications
Available in premium materials including:
  • High-carbon steel (ASTM A228)
  • Stainless steel (316L)
  • Alloy steel (Cr-V)
With a dedicated quality engineering team and digital quality management system (QMS), we provide full traceability—from raw material lot codes to production parameters—ensuring transparency for our global clientele.
Continuous Improvement
Beyond compliance, our ISO 9001 framework drives continuous improvement through customer feedback loops, corrective action protocols, and Design for Six Sigma (DFSS) methodologies, reducing non-conformities to 0.002% ppm.
Whether you require RoHS-compliant electronics springs or high-temperature alloy variants for industrial ovens, our certified quality process guarantees consistent performance, reliability, and peace of mind.
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High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs

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Product Detail
MOQ :
Negotiable
Place of Origin :
Sihong, China
Brand Name :
Sunzo
Certification :
CE/IATF16949/45001/14001/9001
Price :
Negotiable
Packaging Details :
Carton
Contact Supplier
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs
High Carbon Steel Helical Spring 1800MPa ASTM A228 Small Compression Springs

Jiangsu Sunzo Spring Elasticity Technology Co., Ltd

Verified Supplier
1 Years
nanjing
Since 2006
Business Type :
Manufacturer, Exporter, Seller
Main Products :
DIN 2093 Disc Spring, Single Turn Wave Spring, DIN 6796 Washer
Total Annual :
1.2M-1.4M
Employee Number :
160~200
Certification Level :
Verified Supplier
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