What is ASTM A209 Steel Pipe?
ASTM A209 tubing is a carbon molybdenum alloy steel Seamless Tubing used in boilers, boiler flues, super heaters, ASME SA209 is available in A209 Grade T1, A209 Grade T1A, and A209 Grade T1B.
ASME SA209 Grade T1a Alloy Steel Seamless Tubes are Carbon Steel Tubes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome moly Tubes.
The three stainless steel alloys ASTM/ASME A/SA209 T1, T1a and T1b have slightly different compositions and mechanical properties and are commonly used in different applications.
ASTM/ASME A/SA209 T1 alloy contains at least 1.00% chromium and 0.18% molybdenum. It has good high-temperature strength and pressure resistance and is often used in applications that require high temperature and pressure resistance, such as thermal equipment, boilers and nuclear power plants.
In comparison, ASTM/ASME A/SA209 T1a is a variation of ASTM/ASME A/SA209 T1 with a slightly different composition, containing at least 1.25% chromium and 0.44% molybdenum. This compositional variation may result in different mechanical properties, providing specific advantages in certain applications.
Likewise, ASTM/ASME A/SA209 T1b is a variation of ASTM/ASME A/SA209 T1 and contains at least 0.50% chromium and 0.25% molybdenum. However, ASTM/ASME A/SA209 T1b is designed to have specific properties that may be beneficial in certain high temperature environments.
| Grade | Mo | Cr | Mn | P | S | C | Si |
| T1 | 0.44-0.65 | / | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.10-0.20 | 0.10-0.50 |
| T1a | 0.44-0.65 | / | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.15-0.25 | 0.10-0.50 |
| T1b | 0.44-0.65 | / | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.14max | 0.10-0.50 |
| Grade | T1 | T1a | T1b |
| Tensile Strength min Ksi(Mpa) | 55(380) | 60(415) | 43(365) |
| Yield Strength Min Ksi(Mpa) | 30(205 | 32(220) | 28(195) |
| Elongation in 2in or 50mm min% | 30 | 30 | 30 |
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A.We have obtained ISO, CE and other certifications. From materials to products, we checkevery process to maintain good quality.
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