AISI 4140

We could produce AISI 4140 forging parts,AISI 4140 forged rings, AISI 4140 Rolled Rings,AISI 4140 forging flanges, AISI 4140 forging round bars, AISI 4140 forged disks, AISI 4140 forging gears, AISI 4140 forging shafts , AISI 4140 forging pipes as per the requirement of the clients
AISI 4140 is Chrome - Moly High Tensile Steel. It offers a very good balance of strength, toughness and wearresistance..
We could delivery AISI 4140 forging material as per the standard of ASTM A29/A29M-91
We use EAF + LF + VD melting methods to melt the material of AISI 4140
As per heat treatment of AISI 4140 forged parts, We could do anealed, normalized, hardening and tempering as per the needs of the clients.
AISI 4140 is an ideal general purpose high tensile constructional steel ready for use after machining.
The chemical composition of AISI 4140 is as follows:

AISI Number	C	Mn	P Max.	S Max.	Si	Ni	Cr	Mo
4140	0.38/0.43	0.75/1.00	0.035	0.040	0.20/0.35	-	0.80/1.10	0.15/0.25

The mechanical property of AISI 4140 is as follows:

Tensile Strength	130 KSI Min	(896 N/mm2)
Yield Strength	110 KSI Min	(758 N/mm2)
Elongation	13 %
Red of Area	30 %

Following is forging process of AISI 4140
Heat to 1150°C Hold until uniform Minimum forging temperature 850°C ��Cool slowly in ashes or sand etc.
Following is heat treatment process of AISI 4140
Annealing: Heat to 830°C – 850°C ��Cool in furnace
Normalising: Heat to 870°C – 900°C Cool in still air
Stress Relieving:
Annealed: Heat to 600°C – 650°C ,Hardened: Heat to 500°C – 550°C ,Cool in still air
Hardening: Heat to 830°C – 880°C ,Quench in oil or polymer
Due to special mechanical properties of AISI 4140 forging parts, there are many wide uses as followings:
AISI 4140 seamless rolled rings and  AISI 4140 forging shafts that is used in chemical pump,plunger pumps.
AISI 4140 forged shafts,AISI 4140 forging pipes, AISI 4140 forged tubes ,forged tube sheets, forged flanges that are used in pressure vessel ,air receivers,Shell & Tube Heat Exchangers
AISI 4140 forging shafts,AISI 4140 forging flanges ,AISI 4140 forged rings,AISI 4140 forging pipes that is used inColumns & Towers,Tanks ,Silos,Process Modules,Preheaters
AISI 4140 forged bushing,AISI 4140 forged sleeves,AISI 4140 forged disks,AISI 4140 forged discs that is used in Offshore and onshore industry, such as subsea and deepwater offshore oil production systems, industrial air compressors, power generators and nitrogen generators
AISI 4140 open die forging parts,forging pieces,forging nozzles forged crankshaft that is used in Cement Mill ,sugar Mill,concrete mills and mixers.
AISI 4140 forged valve stems, forged valve parts, forged valve seat ring,forged valve blocks,forged bodies that are used in ball valves, check valves, strainers ,globe valve, gate valve,Plug valve and so on
AISI 4140 forging rings, AISI 4140 forging spindles, AISI 4140 forging bars,AISI 4140 forging gears that are used in power transmission, turbine,gas compressor,gear boxes and so on
AISI 4140 forged products,AISI 4140 forged nozzles,AISI 4140 forging eccentric shaft that are used on processing units,mechanical equipment, crystalizer equipment,Wellhead and Christmas tree
AISI 4140 forged wheels, forged manifold,forging rolls that are used in shipping building,heavy machinery.Paper and Pulp Industries,Pharmaceutical & Biochemistry
Our AISI 4140 forged parts will be Ultrasonic testing as per standard, EN10228-3,Sep1921,ASTM A388 and so on
We could supply AISI 4140 forging parts certificate as per the standard of EN10204-3.1 or EN10204-3.2 of third party
Please send us the size or drawing of AISI 4140 forged material that you need, we are glad to quote the best price for your side