Germany · DIN
1.0488
DIN EN 10217-3:2005 — Welded steel tubes for pressure purposes - Technical delivery conditions - Part 3: Alloy fine grain steel tubes
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 0.02 | |||
| C | 0.16 | |||
| Cr | 0.3 | |||
| Cu | 0.3 | |||
| Mn | 0.5 | 1.5 | ||
| Mo | 0.08 | |||
| N | 0.02 | |||
| Nb | 0.05 | |||
| Nb+V+Ti | 0.05 | |||
| Ni | 0.5 | |||
| P | 0.03 | |||
| S | 0.02 | |||
| Si | 0.4 | |||
| Ti | 0.03 | |||
| V | 0.05 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| welded steel tube +N, 12 < T <=, 20 mm | ≥275 or Upper yield stress | 390–530 | ≥24 Long. | |||
| welded steel tube +N, 20 < T <=, 40 mm | ≥275 or Upper yield stress | 390–510 | ≥24 Long. | |||
| welded steel tube +N, T <= 12 mm | ≥275 or Upper yield stress | 390–530 | ≥24 long. test | |||
| welded steel tube +N, T <= 16 mm +HFWsteel tubes | ≥47 KV (20°C)；≥43 KV (0°C)；≥39 KV (-10°C)；≥35 KV (-20°C)；≥31 KV (-30°C)；≥27 KV (-40°C)；≥70 KV (20°C)；≥65 KV (0°C)；≥60 KV (-10°C)；≥53 KV (-20°C)；≥47 KV (-30°C)；≥40 KV (-40°C) |
High/low temperature
| Condition | Temperature ℃ | min | Remarks |
|---|---|---|---|
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -10 | 39 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -20 | 35 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -30 | 31 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -40 | 27 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -10 | 60 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -20 | 53 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -30 | 47 | KV |
| welded steel tubes normalized +N T <= 16 mm (T <= 40 mm) +HFW steel tubes ( SAW steel tubes ) | -40 | 40 | KV |