Seamless carbon steel and alloy steel mechanical pipe standards: ASTM A519 seamless gas cylinder pipes, materials: 4130, 4140, 4142, 4145, outer diameter specifications 219 mm to 720 mm, wall thickness 5 mm-50 mm.
What is the chemical composition of ASTM A519 grade 4130 alloy pipe?
The Chemical Composition of ASTM A519 grade 4130 is Iron, Fe 97.03 – 98.22, Chromium, Cr 0.80 – 1.10, Silicon, Si 0.15 – 0.30, Sulfur, S 0.040, Carbon, C 0.280 – 0.330, Molybdenum, Mo 0.15 – 0.25, Phosphorous, P 0.035 and Manganese, Mn 0.40 – 0.60.
standard:
GB18248 - Chinese national standard
ASTM A519 - American Society for Testing and Materials standard
use:
Hot-rolled large-diameter seamless steel pipes for manufacturing gas cylinders
Mainly produced steel pipe grade: 4130X
Contact us for price: sales@gneetube.com
Dimensional tolerance
| Steel pipe types | Outer diameter(D) | Wall thickness(S) | ||
| hot rolled pipe A519 | Steel pipe outer diameter (mm) | Allowable deviation (mm) | Steel pipe wall thickness (mm) | Allowable deviation (mm) |
|
φ559 |
±1.0% |
17.0 |
－0%,＋25 |
|
4130X Seamless carbon steel pipe Mechanical properties
| standard | Trademark | Tensile strength (MPa) | Yield strength (MPa) | Elongation(%) | Impact power Akv(J) | hardness |
|
Q/321088HGB3 |
4130X |
725-865 |
485～735 |
≥20 |
－40℃≥40 |
195-269HB |
4130X Seamless gas cylinder tube chemical composition
| standard |
|
chemical composition%) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
||
|
Q/321088HGB3 |
4130X |
0.25-0.35 |
0.15-0.35 |
0.40-0.90 |
≤0.020 |
≤0.010 |
0.80-1.10 |
≤0.25 |
≤0.20 |
0.15-0.25 |
≤0.08 |
ASTM A519 hydraulic cylinder pipe
Outside diameter: 60 - 711mm
Wall thickness: 4-30mm
Length: 4 - 14m
Allowable tolerance: OD ± 1.0%, WT: 0--+25%
Delivery Condition: Without heat treatment, Quenched + Tempered, Normalized + Tempered
Large-size seamless gas cylinders are generally made of large-diameter chromium-molybdenum steel seamless steel pipes. Cr-Mo steel has excellent comprehensive mechanical properties, with high strength and sufficiently good plasticity and toughness even at 40°C.
GNEE Additional value-added services
UT(Ultrasonic examination)
AR(As Hot Rolled only)
TMCP (Thermal Mechanical Control Processing)
N(Normalized)
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FAQ
1.Q.How do we trust your company?
A. We specialist in steel business for many years, authenticated by SGS,welcome to visit our factory.
2.Q.Can your products be customized?
A.Yes, we can produce and process according to your requirements.
3.Q.Do you have quality control?
A.Yes, we have got BV.SGS certification.
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