TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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GB13296 0Cr18Ni9 Seamless Stainless Steel Tubes for Boiler and Heat Exchanger
Application: Boiler and Heat Exchanger
Size:WT 1~14mm
OD 6-159mm
L 4-12m
Production Method of Steel:Refining outside the furnace or electric arc furnace slag remelting process
Production Method of Steel Tube:Hot rolled(extrusion and expansion)or cold drawn seamless method.
Permissible deviation of outside diameter and wall thickness
| Classification | Nominal size | Allowable deviation | |
| W-H | OD | ≤140 | ±1.25%D |
| >140 | ±1%D | ||
| S | ≤3 | -40%S | |
| >3~4 | -35%S | ||
| >4~5 | -33%S | ||
| >5 | -28%S | ||
| W-C | OD | 6~30 | +0.15 -0.20 |
| >30~50 | ±0.30 | ||
| >50 | ±0.75%D | ||
| S | D≤38 | +20%S | |
| D>38 | -22%S | ||
Steel grade and chemical composition
| Number | Steel grade | Chemical Composition % | ||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Ti | ||
| 1 | 0Cr18Ni9 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 8.00~ 1.00 | 17.00~ 19.00 | — | — |
| 2 | 1Cr18Ni9 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 8.00~ 10.50 | 17.00~ 19.00 | — | — |
| 3 | 1Cr19Ni9 | 0.04~0.10 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 8.00~ 12.00 | 18.00~ 20.00 | — | — |
| 4 | 00Cr19Ni10 | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 8.00~ 12.00 | 18.00~ 20.00 | — | — |
| 5 | 0Cr18Ni10Ti | ≤0.08 | ≤1.00 | ≤3.00 | ≤0.035 | ≤0.030 | 9.00~ 12.00 | 17.00~ 19.00 | — | ≥5C |
| 6 | 1Cr18Ni11Ti | 0.04~0.10 | ≤0.75 | ≤2.00 | ≤0.030 | ≤0.030 | 9.00~ 13.00 | 18.00~ 20.00 | — | 4Xc~ 0.60 |
| 7 | 0Cr18Ni11Nb | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 9.00~ 13.00 | 17.00~ 20.00 | — | — |
| 8 | 1Cr19Ni11Nb | 0.04~0.10 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 9.00~ 13.00 | 17.00~ 20.00 | — | — |
| 9 | 0Cr17Ni12Mo2 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 11.00~ 14.00 | 18.00~ 20.00 | 2.00~ 3.00 | — |
| 10 | 1Cr17Ni12Mo2 | 0.04~0.10 | ≤0.75 | ≤2.00 | ≤0.030 | ≤0.030 | 11.0~ 14.00 | 16.00~ 20.00 | 2.00~ 3.00 | — |
Hardness
| Organization type | Steel grade | Hardness | ||
| HBW | HRB | HV | ||
| Austenitic | 00Cr18Ni10,0Cr19Ni9N,00Cr17Ni13Mo2,0Cr17Ni12Mo2N | ≤217 | ≤95 | ≤220 |
| 0Cr18Ni13Si4 | ≤207 | ≤95 | ≤218 | |
| Others | ≤187 | 90 | 200 | |
| Ferrite | 1Cr17 | ≤183 | — | — |
| 00Cr27Mo | ≤219 | — | — | |
