Place of Origin:
ZHEJIANG, CHINA
Brand Name:
TORICH
Certification:
ISO9001, ISO14001, TS16949
Model Number:
ASTM A209
STEEL GRADE AND CHEMICAL COMPOSITIONS | ||||||
Seel Grade | C | Mn | P | S | Si | Mo |
T1 | 0.10-0.20 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.10-0.50 | 0.44-0.65 |
T1a | 0.15-0.25 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.10-0.50 | 0.44-0.65 |
T1b | ≤0.14 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.10-0.50 | 0.44-0.65 |
Mechanical Properties | |||||
Seel Grade | Tensile strength(Mpa) | Yield Strength (Mpa) | δfixed (Pipe Segment S≥8mm vertical) | δfixed (S<8mm vertical) | δfixed (Round brilliant) |
T1 | ≥380 | ≥205 | ≥30 | See note | ≥22 |
T1a | ≥415 | ≥220 | ≥30 | See note | ≥22 |
T1b | ≥365 | ≥195 | ≥30 | See note | ≥22 |
Note: S<8mm vertical Elongation is the basic value minus 1.5%,per wall thickness minus 0.8mm |
HARDNESS | ||
Seel Grade | HB S ≥5.1mm | HRB S≤ 5.1mm |
T1 | ≤146 | ≤80 |
T1a | ≤153 | ≤81 |
T1b | ≤137 | ≤77 |
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Delivery condition and Heat treatment:
Cold Drawn Seamless and Hot Rolled Seamless need Heat treatment .minimum temperature is 650℃
If Delivery condition is annealing, isothermal annealing, normalizing+ tempering tempering minimum temperature is 650℃
Hot-finished tubes are heat treated at a temperature of 1200℉ (650℃) or higher.
Reference Documents:
ASTM A450/A450M Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Ally Steel Tubes
ASTM A941 Terminology Relating to Steel, Stainless Steel, Related Alloys and Ferroalloys
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