Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 4130 precision seamless alloy steel pipe in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
ASTM A519 4130 Mechanical Tubes
4130 Steel Introduce
AISI or SAE 4130 grade is a low-alloy steel containing chromium and molybdenum as strengthening agents. The steel has good strength and toughness, weldability and machinability. AISI/SAE 4130 grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength. It shows good overall combinations of strength, toughness. and fatigue strength. Standard: EN 10216-2: 2014 Seamless steel tubes for pressure purposes. Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10305-1: 2010 Steel tubes for precision applications. Seamless cold drawn tubes. EN 10297-1: 2003 Seamless circular steel tubes for mechanical and general engineering purposes. Non-alloy and alloy steel tubes. Equivalent grades of steel 25CrMo4 (1.7218)
| EU | USA | Germany | Japan | France | England | Italy |
| EN | - | DIN,WNr | JIS | AFNOR | BS | UNI |
| 25CrMo4 | SAE4130 | 25CrMo4 | SCM420 | 25CD4 | 708A25 | 25CrMo4 |
Chemical Composition
| Grade | C | Mn | P | S | Si | Cr | Mo |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 25CrMo4/ 1.7218 | 0.22-0.29 | 0.60-0.90 | 0.025 | 0.035 | <=0.40 | 0.90-1.2 | 0.15-0.30 |
| SCM430/ SCM2 | 0.28-0.33 | 0.60-0.85 | 0.030 | 0.030 | 0.15-0.35 | 0.90-1.2 | 0.15-0.30 |
Technical Parameters:
Standard: ASTM A519
Grade: 1020 1045,4130,4140
Tolerance :+0.05 -0.05
Process: cold rolled cold drawn
Delivery Condition: Cold worked, Annealed, Normalized, Stress Relieved etc.
BV SGS
Dimensions and Tolerances:
Outer diameter: 21 to 426 mm, wall thickness: 2 to 50 mm, length: Not more than 12 m.
Delivery Condition:
Cold Worked, Stress Relieved, Annealed, Normalized.
Package:
All pipes shall be marked, coated with oil and capped with plastic end protector. All items shall be plain end.
Our Services:
Third Party inspection acceptable. such as SGS, BV etc. Supplying financial support with usance L/C 180 days after B/L date.
Tests we apply to the tubes:
1) Chemical Composition Analysis
2) Mechanical Properties (Tensile strength, Yield strength,, Elongation, Hardness)
3) Technological Test (Flattening test, Flaring Test, Bending Test, Hydraulic pressure test)
4) Surface quality detection
5) Eddy-current examination
6) Visual test
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