MATERIAL REFERENCES
ZG270-500 and ZG230-450: international procurement references
Compare ZG270-500 from the documented suspension examples with ZG230-450 from the historical Japan pile tip programme. The table gives their approximate ASTM, legacy DIN and EN procurement references; the source links identify the actual material and supplied condition.
Which international references help compare the grades?
These approximate international equivalents are procurement references; the documented example materials remain the stated ZG grades. Material grade, delivery condition and acceptance requirements follow the approved drawing and specified standard. DIN 1681 is withdrawn; current European enquiries refer to EN 10293.
| Chinese grade in the example | ASTM equivalent reference | Legacy DIN equivalent reference | EN equivalent reference |
|---|---|---|---|
| ZG270-500 | ASTM A27/A27M Grade 70-40 | DIN 1681 GS-52 (legacy) | EN 10293 GE270 |
| ZG230-450 | ASTM A27/A27M Grade 65-35 | DIN 1681 GS-45 (legacy) | EN 10293 GE240 |
Which source records identify the actual materials?
Use the linked product records for the actual material and supplied condition of the leaf spring seat, upper torque rod bracket and historical pile tips.
What should remain in the material enquiry?
Combine the complete material designation and delivery requirements in one specification so suppliers can quote against the same technical basis.
- Give the material standard, its revision and the complete grade designation.
- Identify the required delivery condition, heat treatment and any additional chemistry or mechanical requirements.
- Separate cast-blank requirements from finished machining, including tests and records needed for acceptance.
- State heat traceability and inspection-document requirements, including EN 10204 3.1 where requested.
Before you send your drawing
Which designation should I put on an RFQ if my drawing specifies EN or ASTM?
Quote the full standard, revision and grade from the drawing. Include the required delivery condition and acceptance documents.
What material information makes quotations comparable?
Use the same material standard and revision, grade, heat treatment, supplementary tests and inspection-document requirements. Separate the requirements for cast blanks and finished machined components.
Reference sources
External references explain standards or general casting processes. Wontide’s own manufacturing examples are identified separately in the text.
Related information
Suspension-component photographs have been edited for surface and background cleanup and lighting.
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