The China equivalent of S355JR (1.0045) is Q355B with a 95% composition match.
🇨🇳 China equivalent of
S355JR1.0045
Standard: GB · Source: GB/T 1591
Chinese equivalent, very close match
Quick Facts
| Original | 🇨🇳 Equivalent | |
|---|---|---|
| Designation | S355JR | Q355B |
| Material Number | 1.0045 | — |
| Standard | EN 10025-2 | GB |
| Category | Carbon Steel | Carbon Steel |
Frequently Asked Questions
Is S355JR the same as Q355B?
S355JR (EN 10025-2) and Q355B (GB) are near-equivalent grades with a 95% composition overlap. Both are carbon steel grades. Minor differences may exist in alloying element ranges. For most applications, they are interchangeable. Always verify against the applicable specification for safety-critical components.
Can I substitute S355JR with Q355B?
In most cases, yes. The chemical composition ranges overlap significantly (95%). However, verify mechanical property requirements for your specific application, as heat treatment practices may differ between EN 10025-2 and GB standards.
What is the GB equivalent of S355JR?
The GB equivalent of S355JR (1.0045) is Q355B, specified in GB/T 1591.
Other International Equivalents
| Country | Standard | Grade | Match | |
|---|---|---|---|---|
| 🇪🇺 | Europe | EN | S355JR | 100% |
| 🇪🇺 | Europe | DIN | St52-3 (old) | 98% |
| 🇬🇧 | United Kingdom | BS | BS 4360 50B | 92% |
| 🇯🇵 | Japan | JIS | SM490A | 90% |
Related Comparisons
Data provided for reference only. Always verify against the applicable specification for critical applications. Source: EN 10025-2, GB/T 1591.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.