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| Brand Name: | TORICH |
| Model Number: | ASTM A178 |
| MOQ: | 1 Ton |
| Price: | Negotiable |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability: | 60000 Ton/Tons per Year |
Superheater tubes are critical components in power plants and industrial boilers, designed to withstand high temperatures and pressures. ASTM A178 is a standard specification for electric-resistance-welded (ERW) carbon-manganese steel tubes, specifically intended for use in boiler and superheater systems. This article delves into the material specifications, key features, chemical composition, mechanical properties, steel grades, applications, and possible alternative grades for ASTM A178 Grade A, Grade B, and Grade C superheater tubes.
ASTM A178 specifies the requirements for ERW carbon-manganese steel tubes used in high-temperature applications. These tubes are manufactured using a precision welding process to ensure uniformity and strength. The standard covers three grades: A, B, and C, each with distinct chemical and mechanical properties tailored to specific applications.
The chemical composition of ASTM A178 tubes varies by grade, as shown in the table below:
| Element | Grade A (%) | Grade B (%) | Grade C (%) |
|---|---|---|---|
| Carbon | 0.06 - 0.18 | 0.19 - 0.27 | 0.27 - 0.35 |
| Manganese | 0.27 - 0.63 | 0.82 - 1.06 | 1.06 - 1.35 |
| Phosphorus (max) | 0.035 | 0.035 | 0.035 |
| Sulfur (max) | 0.035 | 0.035 | 0.035 |
The mechanical properties of ASTM A178 tubes are critical for ensuring performance under operational stresses. The table below outlines the properties for each grade:
| Property | Grade A | Grade B | Grade C |
|---|---|---|---|
| Tensile Strength (min, MPa) | 310 | 415 | 485 |
| Yield Strength (min, MPa) | 180 | 240 | 275 |
| Elongation (min, %) | 35 | 30 | 30 |
ASTM A178 covers three grades of steel, each designed for specific applications:
ASTM A178 superheater tubes are widely used in:
While ASTM A178 is a popular choice, alternative grades may be considered based on specific requirements:
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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