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Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
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SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
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ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
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SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
ASTM A455 Mechanical behavior,ASTM A455 Heat Treatment
ASTM A455 is a steel of 16. Steel for Boilers and Pressure Vessels,good performance,Provides a ASTM A455 brief description of A455 and some properties.
ASTM A455 Mechanical behavior:
Tensile strength σb (MN/m2)> = 550
Yield strength σs (MN/m2)> = 200
Elongation δ5 (%)> = 40
Shrinkage ψ (%)> = 55
Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV
ASTM A455 Heat Treatment:
Conditions A - 1900 (1038 C) for 30 minutes and cool below 60 F (16 ℃) for a complete martensite transformation. CONDITION H 950 - Treat Condition 1 hour, air cool material in 900 F (482 C) .. condition H925, H1025, H1075, H1100, H1150 soak 4 hours solution treated material at a specific temperature, air cool, CONDITION H1150M, soak solution treated material at 1400 ℉ (760 C), 2 hours, air cool, then re-heat to 1150 F for 4 hours and air cooling (620 C).
ASTM A455 Welding performance:
Successful common fusion and resistance welding method, this should not be added to alloy oxyacetylene welding. If necessary, I suggest AWS E/ER630 filler metal.
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