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AISI 4130 is a low alloy steel containing molybdenum and chromium as strengthening agents. We stocks all AISI 4130 Pipes, 4130 Tubing, 4130 Flanges, 4130 Pipes Fittings, 4130 Elbow etc. The carbon content is nominally 0.30% and with this relatively low carbon content the alloy is excellent from the fusion weldability standpoint. The alloy can be hardened by heat treatment. Typical applications for 4130 low alloy steel include structural use such as aircraft engine mounts and welded tubing applications.

• AISI 4130 Pipes Specification

• Surface treatment: ASTM A519-Temporary Coating, Special Coating, Galvanized, immersion oil, lacquer, passivation, phosphating,etc; Or Oil-dip paint black with two plastic caps on each end
• Inspection: Strictly according to the standard requirements and offer the original MTC (EN10204.3.1/3.1B)
• Relevant Test: ASTM A519-Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength,Yield strength,Elongation),Technics Properties(Flattening Test,Flaring Test,Bending Test, Hardness Test,Blow Test,etc), Exterior Size Inspection, Nondestructive electric Test,Hydrostatic Test, magnetic particle testing
• Manufacture methods: Cold Finished method or hot finished Method.

Applications: Automobile and Bearing Industry, Mechanical and Structral Purpose, Hydraulic and Petrochemical Purpose, etc.

• Know more about AISI 4130 Alloy Steel (UNS G41300)

Chemical Composition

The chemical composition of AISI 4130 alloy steel is listed in the following table.

Element	Content (%)
Iron, Fe	97.03 – 98.22
Chromium, Cr	0.80 – 1.10
Manganese, Mn	0.40 – 0.60
Carbon, C	0.280 – 0.330
Silicon, Si	0.15 – 0.30
Molybdenum, Mo	0.15 – 0.25
Sulfur, S	0.040
Phosphorous, P	0.035

Physical Properties

The following table shows the physical properties of AISI 4130 alloy steel.

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

Mechanical Properties

The mechanical properties of AISI 4130 alloy steel are outlined in the following table.

Properties	Metric	Imperial
Tensile strength, ultimate	560 MPa	81200 psi
Tensile strength, yield	460 MPa	66700 psi
Modulus of elasticity	190-210 GPa	27557-30458 ksi
Bulk modulus (Typical for steel)	140 GPa	20300 ksi
Shear modulus (Typical for steel)	80 GPa	11600 ksi
Poissons ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	21.50%	21.50%
Reduction of area	59.6	59.60%
Hardness, Brinell	217	217
Hardness, Knoop (Converted from Brinell hardness)	240	240
Hardness, Rockwell B (Converted from Brinell hardness)	95	95
Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.)	17	17
Hardness, Vickers (Converted from Brinell hardness)	228	228
Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.)	70	70

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

Forming of AISI 4130 steel can be performed in the annealed condition.

Welding

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

Forging of AISI 4130 steel can be performed can be performed at 954 to 1204°C (1750 to 2200°F).

Hot Working

Hot working of AISI 4130 steel can be done at 816 to 1093°C (1500 to 2000°F).

Cold Working

AISI 4130 steel can be cold worked using conventional methods.

Annealing

AISI 4130 steel can be annealed at 843°C (1550°F) followed by air cooling at 482°C (900°F).

Tempering

Tempering of AISI 4130 steel can be performed at 399 to 566°C (750 to 1050°F), depending on the desired strength level.

Hardening

Hardening of AISI 4130 steel can be done with cold working or heat treatment.

• AISI 4130 Pipes quality certificates

AISI 4130 Pipes delivered with Mill Test Certificate EN 10204/3.1B

• AISI 4130 Pipes Packaging & Shipping

Packing: Plastic plugs in both ends, bundles of max. 3,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper and sackcloth with several steel strips

Delivery Condition: Annealed (A), Bright Annealing, Normalized (N), Stress Relief Or Finish Anneal (SR), Quenched and Tempered (Q+T), etc.

Marking: All tubes are eddy current tested and are marked with size, cast number and specification. Or as per customer’s requirement; 

Packing Type: Round , Square, Rectangle, Hexagon. Streamline, etc;

AISI 4130 Pipes Inner packing: 
Caps on two ends of every pipe 

AISI 4130 Pipes Outer packing: 
Hexagonal shape bundles wrapped with strong steel trip or according to customers’requests. 

So, besides the fact that we can arrange freight transportation for you, we can before that: 

• specifically mark parts or packages;
• provide for a special packing according to what is required by the shipping method or by you.

We mark the AISI 4130 Pipes as needed with the most suitable marking technique.

When packaging and packing, our experienced warehouse staff systematically takes the greatest precautions for your AISI 4130 Pipes to be optimally protected during transportation. We pack the AISI 4130 Pipes according to the appropriate method: strapped pallet, wooden crate, overseas packing (ISPM15).

• ”>AISI

• AISI 4130 Pipes
• AISI 4130 SEAMLESS Pipes
• ASTM A519 4130 Pipes
• ASTM A519 4130 SEAMLESS Pipes
• AISI 4130 75K SEAMLESS Pipes
• AISI 4130 DRILLING Pipes
• 4130 Tubes
• AISI 4130 Tubes
• AISI 4130 SEAMLESS Tubes
• AISI 4130 L 80 SEAMLESS Tubes
• A519 4130 Seamless Alloy Steel Tube
• 4130 Tubing
• Chrome Moly Tubing 4130
• 4130 ALLOY STEEL ROUND SEAMLESS TUBING
• Alloy Steel 4130 Round Tubing
• 4130 Aircraft Tubing
• 4130 seamless tubing
• 4130 Steel Rectangular Tubing
• ASTM A519 4130 Mechanical Tubing
• AISI 4130 Flanges
• Alloy Steel AISI 4130 Fittings

 

• ”>AISI

AISI 4130 Alloy Steel (UNS G41300)

Alloy steels are designated by AISI four-digit numbers. They are more responsive to mechanical and heat treatments than carbon steels. They comprise different types of steels with compositions which exceed the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va in the carbon steels. 

AISI 4130 alloy steel contains chromium and molybdenum as strengthening agents. It has low carbon content, and hence it can be welded easily. The datasheet given below provides more details about AISI 4130 alloy steel. 

Alloy steel

GB/T 3077	JIS	AISI/SAE	DIN	BS	ISO
20Mn2-50Mn2	SMn420-SMn443	1320-1345	20Mn5-50Mn7	150M19-160M36	22Mn6-42Mn6
15Cr-50Cr	SCr415-445	5115-5150	-	527A17	20Cr4-41Cr4
15CrMo	SCM415	-	15CrMo5	1653	-
35CrMo	SCM435	4137	34CrMo1	-	-
30CrMo	SCM420	4130	25CrMo4	25CrMo4
30CrMoA	SCM430	4130	34CrMo4	34CrMo4
42CrMo	SCM440	4140	42CrMo4	708M40
-	-	F11-91	-	-	-
38CrMoAl	SACM645	-	-	-	41CrAlMo74
50CrV	-	6150	51CrV4	-	-
15-20CrMn	SMnC420	5115-5120	16MnCr5		16MnCr5
GCr15	-	SAE52100	100Cr6	-	-
GCr15SiMn	-	-	100CrMnSi6-4	-	-
20CrMnMo(H)	SCM421(H)	4119	-	-	-
40CrMnMo	SCM440	4142	42CrMo4	708A42	42CrMo4
20-50CrNi	SNC436	3115-3150	40NiCr6	640M40	-
12CrNi2	SNC415	3415	14NiCr10	-	-
20CrNiMo	SNCM220	8620	21NiCrMo2	805M20	20NiCrMo2
34CrNiMo	-	-	34CrNiMo6	-	-
34CrNi1Mo	-	-	34CrNi1Mo6	-	-
40CrNiMo	SNCM439	4340	36CrNiMo4	816M40	-

Oil machinery steel series: AISI4150M, AISI4140, AISI 4130 etc.

A519:1008, 1010, 1020, 1026, 1035, 1045, 1050, 1518, 1524, 4118, 4130, 4135, 4140, 4142, 5115, 5120, 5140, 52100

AMS: AMS-T-6736, 4130

4130 Chemical Component Analysis(%):
C: 0.28-0.33; Mn: 0.40-0.60; Si: 0.15-0.35; S: < 0.040; P: < 0.040; Cr: 0.80 -1.10; Mo: 0.15-0.25;

Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels.

Specifications

Standard	Alloy Steel
AISI 4130 Alloy Steel	UNS G41300
AISI 4340 Alloy Steel	UNS G43400
AISI 4140 Alloy Steel	UNS G41400
AISI 8620 Alloy Steel	UNS G86200

AISI 4130 (Chromoly) Normalized Alloy Steel (available in Round Pipes Tubes Tubing, Flange, Pipe Fittings)
Minimum Properties	Ultimate Tensile Strength, psi	97,200
	Yield Strength, psi	63,100
	Elongation	25.5%
	Rockwell Hardness	B92
4130 (Chromoly) Annealed Alloy Steel
Minimum Properties	Tensile Strength, psi	81,200
	Yield Strength, psi	52,200
	Elongation	28.2%
	Rockwell Hardness	B82
Chemistry	Iron (Fe)	97.3 – 98.22%
	Carbon (C)	0.28 – 0.33%
	Chromium (Cr)	0.8 – 1.1%
	Manganese (Mn)	0.4 – 0.6%
	Molybdenum (Mo)	0.15 – 0.25%
	Phosphorus (P)	0.035% max
	Sulphur (S)	0.04% max
	Silicon (Si)	0.15 – 0.35%

Alloy Steel Chemical Composition

Chemical Composition Ranges and Limits, percent
AISI Number	C	Mn	P Max.	S Max.	Si	Ni	Cr	Mo
AISI 4130	0.28/0.33	0.40/0.60	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15/0.25
AISI 4137	0.35/0.40	0.70/0.90	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15/0.25
AISI 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
AISI 4142	0.40/0.45	0.75/1.00	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15/0.25
AISI 4145	0.43/0.48	0.75/1.00	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15/0.25
AISI 4147	0.45/0.50	0.75/1.00	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15/0.25
AISI 4150	0.48/0.53	0.75/1.00	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15/0.25
AISI 4161	0.56/0.64	0.75/1.00	0.035	0.040	0.20/0.35	—	0.70/0.90	0.25/0.35
AISI 4320	0.17/0.22	0.45/0.65	0.035	0.040	0.20/0.35	1.65/2.00	0.40/0.60	0.20/0.30
AISI 4340	0.38/0.43	0.60/0.80	0.035	0.040	0.20/0.35	1.65/2.00	0.70/0.90	0.20/0.30
AISI 4419	0.18/0.23	0.45/0.65	0.035	0.040	0.20/0.35	—	—	0.45/0.60
AISI 4615	0.13/0.18	0.45/0.65	0.035	0.040	0.20/0.35	1.65/2.00	—	0.20/0.30
AISI 4620	0.17/0.22	0.45/0.65	0.035	0.040	0.20/0.35	1.65/2.00	—	0.20/0.30
AISI 4621	0.18/0.23	0.70/0.90	0.035	0.040	0.20/0.35	1.65/2.00	—	0.20/0.30
AISI 4626	0.24/0.29	0.45/0.65	0.035	0.040	0.20/0.35	0.70/1.00	—	0.15/0.25
AISI 4718	0.16/0.21	0.70/0.90	0.035	0.040	0.20/0.35	0.90/1.20	0.35/0.55	0.30/0.40
AISI 4720	0.17/0.22	0.50/0.70	0.035	0.040	0.20/0.35	0.90/1.20	0.35/0.55	0.15/0.25
AISI 4815	0.13/0.18	0.40/0.60	0.035	0.040	0.20/0.35	3.25/3.75	—	0.20/0.30
AISI 4817	0.15/0.20	0.40/0.60	0.035	0.040	0.20/0.35	3.25/3.75	—	0.20/0.30
AISI 4820	0.18/0.23	0.50/0.70	0.035	0.040	0.20/0.35	3.25/3.75	—	0.20/0.30
AISI 5120	0.17/0.22	0.70/0.90	0.035	0.040	0.20/0.35	—	0.70/0.90	—
AISI 5130	0.28/0.33	0.70/0.90	0.035	0.040	0.20/0.35	—	0.80/1.10	—
AISI 5132	0.30/0.35	0.60/0.80	0.035	0.040	0.20/0.35	—	0.75/1.00	—
AISI 5135	0.33/0.38	0.60/0.80	0.035	0.040	0.20/0.35	—	0.80/1.05	—
AISI 5140	0.38/0.43	0.70/0.90	0.035	0.040	0.20/0.35	—	0.70/0.90	—
AISI 5145	0.43/0.48	0.70/0.90	0.035	0.040	0.20/0.35	—	0.70/0.90	—
AISI 5147	0.46/0.51	0.70/0.95	0.035	0.040	0.20/0.35	—	0.85/1.15	—
AISI 5150	0.48/0.53	0.70/0.90	0.035	0.040	0.20/0.35	—	0.70/0.90	—
AISI 5155	0.51/0.59	0.70/0.90	0.035	0.040	0.20/0.35	—	0.70/0.90	—
AISI 6150	0.48/0.53	0.70/0.90	0.035	0.040	0.20/0.35	—	0.80/1.10	0.15 min.
AISI 8615	0.13/0.18	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8617	0.15/0.20	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8620	0.18/0.23	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8622	0.20/0.25	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8625	0.23/0.28	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8627	0.25/0.30	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8630	0.28/0.33	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8637	0.35/0.40	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8640	0.38/0.43	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8642	0.40/0.45	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8645	0.43/0.48	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8655	0.51/0.59	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.15/0.25
AISI 8720	0.18/0.23	0.70/0.90	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.20/0.30
AISI 8740	0.38/0.43	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.20/0.30
AISI 8822	0.20/0.25	0.75/1.00	0.035	0.040	0.20/0.35	0.40/0.70	0.40/0.60	0.30/0.40
AISI 9254	0.51/0.59	0.60/0.80	0.035	0.040	1.20/1.60	0.60/0.80	—	—
AISI 9255	0.51/0.59	0.70/0.95	0.035	0.040	1.80/2.20	—	—	—
AISI 9260	0.56/0.64	0.75/1.00	0.035	0.040	1.80/2.20	—	—	—

Grades shown in the above list with prefix letter E are normally made only by the basic electric furnace process. All others are normally manufactured by the basic open hearth or basic oxygen processes but may be manufactured by the basic electric furnace process with adjustments in phosphorus and sulphur.