Professional China Forged Steel Fittings - Forged Cylinders – DHDZ

Product Detail

Open Die Forgings Manufacturer In China FORGED CYLINDER

Max. O.D.	Max. Length	Max. Weight
4000mm	10 000mm	30 Tons

DHDZ manufactures seamless forged, heavy wall hollow cylinders and sleeves in a variety of customized configurations as per customer requirements. Seamless forged hollows are ideal for high-stress applications and harsh environments due to their durability, strength and corrosion resistance. Hollows can be produced not only in a straight cylindrical shape, but with unlimited variations of O.D.s and I.D.s, including tapers. Additionally DHDZ offers all downstream processing including heat treatment, machining and mechanical and non-destructive testing, upon request. Contact us today with your exact specifications, our team will work with you to capitalize on our capabilities to minimize material waste and reduce process inefficiencies. Common used material: 1045 | 4130 | 4140 | 4340 | 5120 | 8620 | 42CrMo4 | 1.7225 | 34CrAlNi7 | S355J2 | 30NiCrMo12 |22NiCrMoV |EN 1.4201 |42CrMo4 Shanxi DongHuang Wind Power Flange Manufacturing Co., LTD., as an ISO registered certified forging manufacturer, guarantee that the forgings and/or bars are homogenous in quality and free of anomalies which are detrimental to the mechanical properties or machining properies of the material . Case: Steel Grade AISI 4130 Alloy Steel (UNS G41300) Physical Properties

Properties	Metric	Mperial
Density	7.85 g/cm3	0.284 lb/in³
Melting point	1432°C	2610°F

AISI 4130 Alloy Steel Relevant Specifications and Equivalents

AISI 4130

0.280 – 0.330

0.40 – 0.60

0.15 – 0.30

0.030 max

0.040 max

0.80-1.10

0.15-0.25

0.25

max

0.35

max

0.15-0.25

ASTM A29/A29M	DIN17350	JIS G4404	GB/T 1229	ISO 683/18
AISI 4130/ G41300	1.7218/25CrMo4	SMN 420	25CrMo4	25CrMo4

Applications Some typical application areas for AISI 4130: Oil and gas industries – as forged valve bodies and pumps Commercial aircraft, aircraft engine mounts Military aircraft Automotive Machine tools Hydraulic tools Auto racing Aerospace Agricultural and defense industries etc. AISI 4130 Forged Cylinder , Low alloy Steel forgings for oil and gas industries. Size: φ774.8 0xφ317.0XH825.5mm Fabrication and Heat Treatment Machinability - AISI 4130 steel can be easily machined using conventional methods. However, machining becomes difficult when the hardness of the steel is increased. Forming of AISI 4130 steel can be performed in the annealed condition. ● Welding of AISI 4130 steel can be performed by all commercial methods. ● Heat Treatment - AISI 4130 steel is heated at 871°C (1600°F) and then quenched in oil. This steel is usually heat-treated at temperatures ranging from 899 to 927°C (1650 to 1700°F). ● Forging of AISI 4130 steel can be performed at 954 to 1204°C (1750 to 2200°F). ● Hot working of AISI 4130 steel can be done at 816 to 1093°C (1500 to 2000°F). ● AISI 4130 steel can be cold worked using conventional methods. ● AISI 4130 steel can be annealed at 843°C (1550°F) followed by air cooling at 482°C (900°F). ● Tempering of AISI 4130 steel can be performed at 399 to 566°C (750 to 1050°F), depending on the desired strength level. ● Hardening of AISI 4130 steel can be done with cold working or heat treatment. Some of the major applications of AISI 4130 alloy steel are in aircraft engine mounts and welded tubing. Forging (Hot Work ) Practice , Heat Treatment Procedure

Forging	1093-1205℃
Annealing	778-843℃ furnace cool
Tempering	399-649℃
Normalizing	871-898℃ air cool
Austenize	815-843℃ water quench
Stress Relieve	552-663℃
Quenching	552-663℃

Rm - Tensile strength (MPa) (Q +T)	≥930
Rp0.2 0.2% proof strength (MPa) (Q +T)	≥785
KV - Impact energy (J) (Q +T)	+20° ≥63
A - Min. elongation at fracture (%)(Q +T)	≥12
Z - Reduction in cross section on fracture (%)(N+Q +T)	≥50
Brinell hardness (HBW): (Q +T)	≤229HB