TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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ASTM B165 Nickel-Copper Alloy UNS N04400 Seamless Pipe and Tube
This specification covers nickel-copper alloy UNS N04400 in the form of cold-worked seamless pipe and tube. The material shall conform to the composition limits specified. Tension test, hydrostatic test, nondestructive electric test, and rounding method shall be done in accordance to the specified requirements.
Chemical Requirements
|
Element |
Composition Limit % | Product(check)Analysis Variations ,under min or over max , of the specified Limit of Element |
| Ni | 63min | 0.45 |
| Cu | 38min 34max | 0.15 0.20 |
| Fe | 2.5max | 0.05 |
| Mn | 2.0max | 0.04 |
| C | 0.3max | 0.02 |
| Si | 0.5max | 0.03 |
| S | 0.024max | 0.005 |
Mechanical Properties of Small-Diameter and Light-Wall Tubing
| Condition | Tensile Strength(Mpa) | Yield Strength min Mpa | Elongation in 2in or 50mm min% |
| Annealed | 585max | 195 | 32 |
| Half-hard | 585min | 380 | 12 |
| Full hard | 760min | 620 | 3 |
Delivery Conditions :
1. Annealed - Soft,with a dull matte finish
2. Stress Relieved - Thermally treated below the annealing tempreature to relieve the major portion of the internal stress, with a thin , light to medium-dark surface
Product Pictures:
QUALITY CONTROL
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects