Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASME SB111 ASTM B111 C68700 O61 Aluminum Brass Seamless Tubes L1M for Evaporator
We are one of the largest suppliers of engineering piping products in China. Our products include steel pipes, pipe fittings and flanges. After more than 20 years of development, we have accumulated many customers all over the world, and Yuhong products have won high praise from our customers.
ASTM A106 seamless pressure tubes (also known as ASME SA106 tubes) are commonly used in oil and gas refineries, power plants, petrochemical plants, boilers and ships and other places where high temperature and high pressure fluids and gases must be transported.
ASTM A106 Gr. B Black Carbon Steel Seamless Pipe Chemical Composition
| Grade | Grade A | Grade B | Grade C |
| Carbon max. % | 0.25 | 0.30* | 0.35* |
| *Manganese % | 0.27 to 0.93 | *0.29 to 1.06 | *0.29 to 1.06 |
| Phosphorous, max. % | 0.035 | 0.035 | 0.035 |
| Sulfur, max. % | 0.035 | 0.035 | 0.035 |
| Silicon, min.% | 0.1 | 0.1 | 0.1 |
| Chrome, max. % | 0.4 | 0.4 | 0.4 |
| Copper, max. % | 0.4 | 0.4 | 0.4 |
| Molybdenum, max. % | 0.15 | 0.15 | 0.15 |
| Nickel, max. % | 0.4 | 0.4 | 0.4 |
| Vanadium, max.% | 0.08 | 0.08 | 0.08 |
ASTM A106 Gr. B Black Carbon Steel Seamless Pipe Mechanical Properties
| Seamless and ERW | A53 Grade A | A53 Grade B |
| Tensile Strength, min, psi | 48,000 | 60,000 |
| Yield Strength | 30,000 | 35,000 |
ASTM A106 Gr. B Black Carbon Steel Seamless Pipe Physical Properties
| Density at 20 °C | Modulus of elasticity kN/mm² at | Thermal conductivity at 20 C° | Spec. thermal capacity at 20 C° | Spec. electrical resistivity at 20 °C | |||
| Kg/dm³ | 20 C° | 300 C° | 400 C° | 450 C° | W/m K | J/kg K | Ω mm²/m |
| 7,85 | 210 | 192 | 184 | 179 | 51 | 461 | 0,20 |
Hot forming and Heat treatment
| Hot forming | Heat treatment | |||
| Temperature °C | Type of cooling | Normalizing 1) | Stress-relieving anneal 2) | Type of cooling |
| 1100 – 950 | Air | 890 – 950 °C | 600 – 650 °C | Air |
Flattening Test
Test Methods - Each test sample shall be inspected in accordance with Test Method B968/B968M.
During inspection, the flattened area of the test specimen shall be free of defects, but imperfections that do not affect the intended application are acceptable. Tubing is not subjected to flattening tests.
Residual Stress Test
Residual stress testing as specified in the purchase order is required only for copper alloys with UNS No. C68700 that are not supplied in the annealed condition.
ASTM A106 Gr. B Black Carbon Steel Seamless Pipe Application Industries
