Alloy Steel AISI 4130 Forged Round Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Forged
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Alloy: Alloy
• Commodity: 4130 Forged Steel Round Bars
• Model NO.: A29 AISI 4130
• Standards: SAE 4130
• MOQ: 5tons
• Shape: Forged Round Bar, Square Bar, Forged Ring
• Transport Package: Standard Sea Worthy Packing
• Specification: 150mm to 1200mm
• Origin: China
• Production Capacity: 3000tons/Month

Product Description

China AISI 4130 Forged Steel / 4130 Forged Round Bars

Product Description

 

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.

Product Specifications
1.Size:150mm to 1200mm.
2.Length: follow by the requirement of customer(normal length is 1-6m).
3.Ultrasonic Test: GB/T6402-91 CLASS 3 or SEP 1921 C/C ,D/d.
4.Manufacture:EAF+LF+VD(Annealed,normalized,Quenched+Tempered,peeled,rough turned).

 

Product Parameters

1.AISI 4130 steel equivalent grades:

Country	USA	BS	BS	Japan
Standard	ASTM A29	EN 10250/EN10083	BS 970	JIS G4105
Grades	4130	25CrMo4/1.7218	708A25/708M25	SCM430

2.AISI 4130 steel chemical composition

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4130	0.28-0.33	0.40-0.60	0.035	0.04	0.15-0.35	0.80-1.10	0.15-0.25

3.4130 Forged steel application:
Commercial aircraft, aircraft engine mounts
Military aircraft
Automotive
Machine tools
Hydraulic tools
Auto racing
Aerospace
Oil and gas industries - as forged valve bodies and pumps
Agricultural and defense industries etc.

4.4130 forged steel Quality:
1.UTS according toSEP1921 C/c, D/d, E/e, A388 or GB/T 6402
2.Grain size: 6-8
3.Manufacture:EAF+LF+VD(Annealed,normalized,Quenched+Tempered,peeled,rough turned).

 

Packing & Delivery

1.Packing details:  Nude packing, sea-worthy packing.

2.Delivery : by containers or bulk vessel 

3.Mark: Heat No. , Size, Grade, Weight , Origin etc.

4.Delivery Condition:
Forged Black
Hot forged +Normalized+rough turned
Q/T:Quench+ Temper
Annealing

.

FAQ

FORGING
Type 4130 steel should be forged between 2250 and 1750 º F (1230 and 950 º C.) The lower the finishing temperature from forging, the finer will be the grain size. If the alloy is forged at too low a temperature, there is a risk of the formation of a non-uniform structure in certain areas of the forged part, necessitating a normalizing treatment - prior to further heat treatment - after forging.

HEAT TREATMENT
Heat treatment after forging is carried out to render the steel suitable for machining, and to meet the mechanical property limits specified for the steel's particular applications. There are several ways to heat treat a given steel part and it is only through practice that the optimum temperature and conditions may be defined. The following information should be taken as a guide only.
heavier sections in water.

TEMPERING
Tempering is carried out to relieve stresses from the hardening process, but primarily to obtain mechanical properties required for the final application. The actual tempering temperature will be chosen to meet the required properties, and in many cases will be a matter of trial and error.

MACHINABILITY
The alloy is readily machinable. Simple shapes might be machined following a normalizing treatment, whereas more complex shapes will require annealing. For optimum machinability a coarse pearlitic structure with minimum ferrite is normally recommended.

Weldability of 4130 is good, and the alloy may be welded using any commercial method.