ASTM A333 / A333M – 16 Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications. ASTM A333 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their microstructure.
A333 pipe is furnished to nine different grades designated by numbers 1, 3, 4, 6, 7, 8, 9, 10, & 11.
Sunny Steel Supply supplies a full range of ASTM A333 (ASME S/A 333)
Low Temperature Steel Pipe Specifications & Grades
- SA333 & A333 – Grades 1, 3, 6 & 8
- A671 CC65 CL22 EFW at -50°F (Welded Alternative to A333)
- Flanges: A/SA 350 LF2, LF3
- Fittings: A/SA-420 WPL6, WPL3
Size range
- 1/4” Nominal to 24”O.D.
- Wall Thickness – Schedule 10 through XXH
- Unscheduled heavy wall pipe thicknesses available up to 4 inches.
ASTM A335 Steel Pipe Material Comparison Tables
| ASTMSTANDARD | UNS NO. | KOREA/JAPANES | GERMAN | BRITISH | FRENCH | ITALIAN | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KS/JIS Symbol | KS/JIS Numbe | Remarks | DIN Type | DIN | Materiral | Remarks | B.S | B.S Grade | Remarks | AFNOR Type | NF Number | Ramarks | UNI Type | UNI Number | Ramarks | ||
| Number | Number | Number | |||||||||||||||
| P1 | K11522 | SPA 12 / STPA 12 | D 3573 / G 3458 | -16 | 16 Mo 5 | 1.5423 | (3a) | -3 | TU 15 D 3 | A49-213 | 16 Mo 5 | 5462 | |||||
| P5 | K41545 | SPA 25 / STPA 25 | D 3573 / G 3458 | -16 | 12 CrMo 19 5 | 1.7362 | WBL-590(3b) | 3604 | FHS 625 | CAT.2 | TU Z12 CD 5-05 | A49-213 | Dalmine234(3b) | ||||
| P9 | S50400 | SPA 26 / STPA 26 | D 3573 / G 3458 | -16 | -3 | HFS 629-470 | CAT.2 | TU Z 10 CD 9 | A49-213 | ||||||||
| P11 | K11597 | SPA 23 / STPA 23 | D 3573 / G 3458 | -16 | 13 CrMo 44 | 17175 | 1.7335 | -8 | 3604 | HFS 621 | CAT.2 | TU 10 CD 5.05 | A49-213 | Dalmine227(3b) | |||
| P12 | K44562 | SPA 22 / STPA 22 | D 3573 / G 3458 | -16 | 13 CrMo 44 | 17175 | 1.7335 | 3604 | HFS 620-440 | CAT.2 | -3 | 14 CrMo 3 | 5462 | (3b) | |||
| P22 | K21590 | SPA 24 / STPA 24 | D 3573 / G 3458 | -16 | 10 CrMo 9 10 | 17175 | 1.738 | 3604 | HFS 622 | CAT.2 | TTU 10 CD 9.10 | A49-213 | 12 Cr Mo 9 10 | 5462 | (3b) | ||
ASTM A333 alloy pipe Strike temperature condition
| Grade | The lowest temperature for strike test | |
|---|---|---|
| ℉ | ℃ | |
| ASTM A333 Grade 1 | -50 | -45 |
| ASTM A333 Grade 6 | -50 | -45 |
ASTM A333 alloy pipe Mechanical requiremnts
| Grade | Tensile Strength (MPa） | Yield Point (MPa) | Elongation (%) | |
|---|---|---|---|---|
| Y | X | |||
| Grade 1 | ≥380 | ≥205 | ≥35 | ≥25 |
| Grade 3 | ≥450 | ≥240 | ≥30 | ≥20 |
| Grade 4 | ≥415 | ≥240 | ≥30 | ≥16.5 |
| Grade 6 | ≥415 | ≥240 | ≥30 | ≥16.5 |
| Grade 7 | ≥450 | ≥240 | ≥30 | ≥22 |
| Grade 8 | ≥690 | ≥515 | ≥22 | |
| Grade 9 | ≥435 | ≥315 | ≥28 | |
| Grade 10 | ≥550 | ≥450 | ≥22 | |
| Grade 11 | ≥450 | ≥240 | ≥18 | |
ASTM A333 alloy pipe Chemical composition (%)
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade 1 | ≤0.30 | 0.40-1.06 | ≤0.025 | ≤0.025 | |||||||
| Grade 3 | ≤0.19 | 0.18-0.37 | 0.31-0.64 | ≤0.025 | ≤0.025 | 3.18-3.82 | |||||
| Grade 4 | ≤0.12 | 0.18-0.37 | 0.50-1.05 | ≤0.025 | ≤0.025 | 0.44-1.01 | 0.47-0.98 | 0.40-0.75 | 0.04-0.30 | ||
| Grade 6 | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.025 | ≤0.025 | ||||||
| Grade 7 | ≤0.19 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 2.03-2.57 | |||||
| Grade 8 | ≤0.13 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 8.40-9.60 | |||||
| Grade 9 | ≤0.20 | 0.40-1.06 | ≤0.025 | ≤0.025 | 1.60-2.24 | 0.75-1.25 | |||||
| Grade 10 | ≤0.20 | 0.10-0.35 | 1.15-1.50 | ≤0.03 | ≤0.015 | ≤0.15 | ≤0.25 | ≤0.015 | ≤0.50 | ≤0.12 | ≤0.06 |
| Grade 11 | ≤0.10 | ≤0.35 | ≤0.6 | ≤0.025 | ≤0.025 | ≤0.50 | 35.0-37.0 | ≤0.50 |
Heat Treatment:
Grades 1 and 6 shall be heat treated to control their microstructure.
ASTM A333 Grade 6 and ASME SA 333 Grade 6 are heat treated to achieve normalized condition @ 920 degrees Celsius with controlled microstructure.
Production specification range of low temperature pipe products
| No. | Order No. | O.D. /mm | W.T. /mm | Legnth /m |
|---|---|---|---|---|
| 1 | A333 Gr.6 A333 Gr.6/X42NS | 10-127 | 1-20 | 6-12.0 |
| 42-114.3 | 3.5-6 | 6-12.2 | ||
| 42-114.3 | 6-12 | 6-12.2 | ||
| 114.3-180 | 3.8-8 | 6-12.2 | ||
| 114.3-180 | 8-22 | 6-12.2 | ||
| 68-180 | 10-14 | 6-12.2 | ||
| 69-254 | 14-55 | 6-12.2 | ||
| 140-340 | 6-8 | 6-12.2 | ||
| 140-368 | 8-42 | 6-12.2 | ||
| 318-720 | 14-50 | 4-12.5 | ||
| 2 | A333 Gr.6/X52QS | 42-114.3 | 3.5-12 | 6-12.2 |
| 114.3-180 | 3.8-22 | 6-12.2 | ||
| 68-254 | 10-40 | 6-12.2 | ||
| 140-368 | 6-40 | 6-12.2 | ||
| 318-720 | 14-40 | 4-12.5 | ||
| 140-368 | 6-25 | 6-12.2 | ||
| 318-720 | 14-25 | 4-12.5 | ||
| 3 | 16MnDG | 10-127 | 1-20 | 6-12.0 |
| 42-114.3 | 3.5-12 | 6-12.2 | ||
| 114.3-180 | 3.8-22 | 6-12.2 | ||
| 68-254 | 10-55 | 6-12.2 | ||
| 140-368 | 6-42 | 6-12.2 | ||
| 318-720 | 14-120 | 4-12.5 |
The raw material used for low temperature service pipe is ALUMINIUM killed with high proportion of manganese (more than 1%) combined with low proportions of carbon (less than 0.23%).For low temperature pipe to be certified as LTCS additional impact test should be conducted at low temperatures, as per mandatory requirements in section 8 of ASTM A 333.
