Standard | ASTM A268 |
Matrial | TP405, TP410, TP430, TP446-1, TP446-2, 26-3-3 |
Size | OD: 4-230mm WT: 1-30mm Length: According to Customer's Requirement |
Applications | For general corrosion-resisting and high-temperature service. |
Manufacture | Tubes are made by the welded process with no filler metal added. |
Surface Condition | The finished tubes are free of scale., slight amount of oxidation is not considered as scale |
Test and Inspection | Tension Test, Flaring Test, Flange Test, Reverse Test, Hardness Test, Hydrostatic or Nondestructive Electric Test |
Heat treatment | As a final treatment, tubes shall be reheated to a temperature of 1200℉(650℃) or higher and cooled (as appropriate for the grade) to meet the requirements of this specification. The martensitic grade UNS S41500 shall be reheated to a temperature of 950℉ (510℃) or higher and cooled as appropriate to meet the requirements of this specification. |
Grade | UNS | C | Mn | P | S | Ni | Cr | Mo | N |
TP410 | S41000 | 0.15 max | 1.00 max | 0.040 max | 0.030 max | --- | 11.5-13.5 | --- | --- |
| S42035 | 0.08 max | 1.00 max | 0.045 max | 0.030 max | 1.0-2.5 | 13.5-15.5 | --- | 0.30-0.50 |
TP430 | S43000 | 0.12 max | 1.00 max | 0.040 max | 0.030 max | --- | 16.0-18.0 | --- | --- |
TP446-1 | S44600 | 0.025 max | 1.50 max | 0.040 max | 0.030 max | ≤0.75 | 23-27 | --- | 0.025 max |
TP446-2 | S44600 | 0.012 max | 1.50 max | 0.040 max | 0.030 max | ≤0.50 | 23-27 | --- | 0.025 max |
26-3-3 | S44660 | 0.030 max | 1.50 max | 0.040 max | 0.030 max | 1.0-3.5 | 25-28 | --- | 0.040 max |
Mechanical Properties
Grade | UNS | Tensile Strength, min ksi MPa | Yeild Strength, min ksi MPa | Elongation in 2 in or 50mm, min % | Rockwell Hardness B Scale |
TP410 | S41000 | 60 (415) | 30 (205) | 20 | 95 |
| S42035 | 80 (550) | 55 (380) | 16 | 88 |
TP430 | S43000 | 60 (415) | 35 (240) | 20 | 90 |
TP446-1 | S44600 | 70 (485) | 40 (275) | 18 | 95 |
TP446-2 | S44600 | 65 (450) | 40 (275) | 20 | 95 |
26-3-3 | S44660 | 85 (585) | 65 (450) | 20 | 25 |
Production Show
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.
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us
TORICH ASTM A268 Welded Stainless Steel Tube For General Corrosion Resisting Service