Product introduction
ASTM A106 is suitable for seamless carbon steel pipe for high temperature environment. ASTM A106 pipe is manufactured according to grade A, B and C. A106-A is equivalent to the domestic 10# steel material, A106-B is equivalent to the domestic 20# material, is a relatively common use of a steel pipe material at home and abroad. A106 seamless steel pipe is mainly used in construction, mechanical processing, electrical, petrochemical and other industries.
Technical data
Seamless Steel Pipe Chemical Composition and Mechanical Properties
This data is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
| Standard |
Grade |
Chemical Composition (%) |
Mechanical Properties |
| ASTM A53 |
C |
Si |
Mn |
P |
S |
Tensile STrength(Mpa) |
Yield STrength(Mpa) |
| A |
≤0.25 |
– |
≤0.95 |
≤0.05 |
≤0.06 |
≥330 |
≥205 |
| B |
≤0.30 |
– |
≤1.2 |
≤0.05 |
≤0.06 |
≥415 |
≥240 |
| ASTM A106 |
A |
≤0.30 |
≥0.10 |
0.29-1.06 |
≤0.035 |
≤0.035 |
≥415 |
≥240 |
| B |
≤0.35 |
≥0.10 |
0.29-1.06 |
≤0.035 |
≤0.035 |
≥485 |
≥275 |
| ASTM A179 |
A179 |
0.06-0.18 |
– |
0.27-0.63 |
≤0.035 |
≤0.035 |
≥325 |
≥180 |
| ASTM A192 |
A192 |
0.06-0.18 |
≤0.25 |
0.27-0.63 |
≤0.035 |
≤0.035 |
≥325 |
≥180 |
| API 5L PSL1 |
A |
0.22 |
– |
0.90 |
0.030 |
0.030 |
≥331 |
≥207 |
| B |
0.28 |
– |
1.20 |
0.030 |
0.030 |
≥414 |
≥241 |
| X42 |
0.28 |
– |
1.30 |
0.030 |
0.030 |
≥414 |
≥290 |
| X46 |
0.28 |
– |
1.40 |
0.030 |
0.030 |
≥434 |
≥317 |
| X52 |
0.28 |
– |
1.40 |
0.030 |
0.030 |
≥455 |
≥359 |
| X56 |
0.28 |
– |
1.40 |
0.030 |
0.030 |
≥490 |
≥386 |
| X60 |
0.28 |
– |
1.40 |
0.030 |
0.030 |
≥517 |
≥448 |
| X65 |
0.28 |
– |
1.40 |
0.030 |
0.030 |
≥531 |
≥448 |
| X70 |
0.28 |
– |
1.40 |
0.030 |
0.030 |
≥565 |
≥483 |
| API 5L PSL2 |
B |
0.24 |
– |
1.20 |
0.025 |
0.015 |
≥414 |
≥241 |
| X42 |
0.24 |
– |
1.30 |
0.025 |
0.015 |
≥414 |
≥290 |
| X46 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥434 |
≥317 |
| X52 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥455 |
≥359 |
| X56 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥490 |
≥386 |
| X60 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥517 |
≥414 |
| X65 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥531 |
≥448 |
| X70 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥565 |
≥483 |
| X80 |
0.24 |
– |
1.40 |
0.025 |
0.015 |
≥621 |
≥552 |
Carbon Steel Seamless Pipe Chemical Composition and Mechanical Properties
| Standard |
Grade |
Chemical Composition |
Mechanical Properties |
| C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Tensile Strength(Mpa) |
Yield Strength(Mpa) |
Elongation(%) |
| GB/T8163 |
10 |
0.07-0.14 |
0.17-0.37 |
0.35-0.65 |
≤0.035 |
≤0.035 |
≤0.15 |
≤0.25 |
≤0.25 |
335-457 |
≥205 |
≥24 |
| 20 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
≤0.25 |
410-550 |
≥245 |
≥20 |
| Q345 |
0.12-0.20 |
0.20-0.55 |
1.20-1.60 |
≤0.045 |
≤0.045 |
– |
– |
– |
490-665 |
≥325 |
≥21 |
Carbon Steel Seamless Pipe Tolerance
| Pipe types |
Pipe Szie(mm) |
Tolerances |
| Hot rolled |
OD |
All |
±1% (min ±0.50mm) |
| WT |
All |
+15%, -12.5% |
| Cold drawn |
OD |
6～10 |
±0.20mm |
| 10～30 |
±0.40mm |
| 30～50 |
±0.45mm |
| >50 |
±1% |
| WT |
≤1 |
±0.15mm |
| >1～3 |
+15% -10% |
| >3 |
+12.5% -10% |
Seamless Steel Pipe End
| Plain End |
Wall Thickness less than 0.5 inch, including SCH STD & SCH XS |
| Plain End (Square Cut) |
Wall Thickness over 0.5 inch, including SCH XXS |
| Beveled End |
Wall Thickness less than 0.5 inch, including SCH STD & SCH XS |
| Couplings |
Outside Diameter equal or less than 2” |
| Thread Protection |
Outside Diameter over 4 inch |
