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BS 3059 Standard Specification for Steel Boiler and Superheater Tubes Part 2. Carbon, Alloy and Austenitic Stainless Steel Tubes with Specified Elevated Temperature Properties |
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Standard: BS 3059-2
Equivalent Standards: EN 10216-2, DIN 17175, NF A 49-213, NBR 5594, GB 3087, GB 5310, JIS G3461 |
Material: 440
Equivalent Materials: P265GH, 1.0425 |
Chemistry Composition |
C, % |
Mn, % |
Si, % |
P, % |
S, % |
0.12-0.18 |
0.90-1.20 |
0.10-0.35 |
0.035 max |
0.035 max |
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Mechanical Properties |
Tensile Strength , MPa |
Yield Strength , MPa |
Elongation, % |
440-580 |
245 min |
21 min |
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Outside Diameter & Tolerance |
Type |
Outside Diameter, mm |
Tolerance, mm |
Seamless class 1 (S1) |
OD≤127 |
±0.50% or min ±0.10 |
Seamless class 2 (S2) |
OD≤127 |
±0.75% or min ±0.30 |
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Wall thickness & Tolerance |
Type |
Outside Diameter, mm |
Tolerance, % |
Seamless class 1 (S1) |
OD≤127 |
±7.5 |
Seamless class 2 (S2) |
OD≤127 |
±10.0 |
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BS 3059-2 specifies requirements for plain end, seamless and welded, carbon and alloy steel tubes and for cold finished seamless austenitic steel tubes, not exceeding 127mm outside diameter and not exceeding 12.5mm thickness for use in boilers and superheaters. Tubes manufactured in accordance with BS 3059-2 have specified room temperature properties and specified proof stress values at elevated temperatures. |
Manufacture: the tubes made by cold drawn process. Heat Treatment: the tubes are heat treated by normalized temperature 880-940°C. Delivery Condition: black or nitrogen protection. Inspection & Test: chemistry composition analysis, tensile test, flattening test, flaring test, NDT, surface inspection and dimension check. |
Length: 5800mm; 6000mm; 6096mm; 7315mm; 11800mm; and so on.
Max length: 30000mm, U bending can be offered, also see the fin tubes. |
Download BS 3059-2 440 Product Manual |
Keyword: boiler steel pipes, superheater tubes, BS 3059-2 |
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