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
Size range
Strike temperature condition：
| Crade | The lowest temperature for strike test | |
|---|---|---|
| ℉ | ℃ | |
| ASTM A333 Grade 1 | -50 | -45 |
| ASTM A333 Grade 6 | -50 | -45 |
Mechanical requiremnts of ASTM A333 alloy pipe
| 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 | |
Chemical Composition (%) of ASTM A333 steel pipe
| Grade | Chemical Composition (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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.
Specific Impact requirements
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.
Production specification range of low temperature pipe products
|
No. |
Order No. |
Size description |
||
|---|---|---|---|---|
|
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 |
||
For low temperature
Production specification range of low temperature pipe products
Pipes are used in low temperature service
Steel pipes are produced accord to ASTM A333 standard
Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.
Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.
