AISI 4130 Alloy Steel Round Bar for Aerospace & Firearm Projects

• After-sales Service: Can Exchange Goods
• Warranty: 2 Year
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar, Carbon Structural Steel
• Model NO.: AISI 4130 1.7218 25CrMo4 SCM430
• Surface Treatment: According to Customer Requirements
• Alloy: Alloy
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Machined or Not: Machinable
• Length: Customer Requirements or Otherwise
• Custom Size: Customizable
• Custom Material: Customizable
• Transport Package: Standard Sea Transport Packaging
• Specification: 6mm-150mm or other size
• Origin: China
• HS Code: 722850
• Production Capacity: 300000tons/Year

Product Description

 Product Description

AISI 4130 is a low alloy steel, also known as chrome-molybdenum steel, with a wide range of applications and excellent properties.

AISI 4130 steel is made of iron, carbon, chromium, molybdenum and small amounts of other elements. Among them, chromium and molybdenum are the main alloying elements, which makes 4130 steel has good heat treatment performance and high strength. The main features of this steel are low alloy content, excellent weldability and machinability.

4130 steel can obtain excellent strength and toughness after proper heat treatment. The process of heat treatment includes normalizing, quenching and tempering steps to achieve the required mechanical properties. During normalizing, 4130 steel is heated to the right temperature and then cooled in the air to increase the strength of the steel. During the quenching process, the 4130 steel is cooled rapidly to obtain a higher hardness. The tempering process is to reheat the quenched steel to reduce its brittleness.

AISI 4130 steel is also characterized by excellent corrosion and fatigue resistance. It is widely used in aerospace, oil and gas extraction, the automotive industry, bicycle and motorcycle manufacturing and other fields. 4130 steel is commonly used in the manufacture of pipes, bearings, piston pins, automotive parts and aerospace parts.

Detailed Photos

 

 

Product Parameters

Chemical Composition

Standard	Grade	C	Si	Mn	P	S	Cr	Mo
EN10083	25CrMo4	0.22-0.29	≤0.4	0.6-0.9	≤0.025	≤0.035	0.9-1.2	0.15-0.3
	1.7218
ASTM A29	4130	0.28-0.33	0.15-0.35	0.4-0.6	≤0.035	≤0.04	0.8-1.1	0.15-0.25
JIS G4105	SCM430	0.28-0.33	0.15-0.35	0.6-0.85	≤0.035	≤0.04	0.9-1.2	0.15-0.3
GB 3077	30CrMo	0.26-0.33	0.17-0.37	0.4-0.7	≤0.03	≤0.03	0.8-1.1	0.15-0.25

Physical Property

Density g/cm3	7.85
Melting point °C	1432
Poisson's ratio	0.27-0.30
Machinability (AISI 1212 as 100% machinability)	70%
Specific Gravity	7.8
Thermal conductivity W/(m.K)	46
Modulus of Elasticity Tension	29

Mechanical Property

	Tensile Strength Mpa	Yield Strength Mpa	Elongation %	Hardness HBW	Impact Charpy-V, -18ºC,J
60K	≥ 586	≥ 414	≥ 18	174-237	≥ 42
75K	≥ 655	≥ 517	≥ 17	197-235	≥ 42

Forging

Forging temperature of AISI 4130 steel should be  carried out between 950ºC-1200ºC,The lower the forging-ending temperature ,the finer the grain size .Hold suitable time for the steel to be uinformly heated before forge, but don't forge below 950ºC.AISI 4130 steel  should be cooled as slowly as possible after forged.

Normalizing

Normalizing is used to refine the structure of forgings that might have cooled non-uniformly after forged,and considered as a conditioning treatment before final heat treatment.Normalizing temperature for AISI 4130 steel should be carried out between 880ºC-900ºC. hold suitable time for the steel to be uniformly heated to  complete the ferrite to austenite transformation.Cool in still air.

Annealing

AISI 4130 steel  can be  annealed to  relieve stress after forging ,and obtain a good structure suitable for machining,Annealing temperature should be carried out between 800ºC-850ºC, hold suitable time for the steel to be heated uniformly. Cool slowly in the furnace.

Hardening

This heat treatment will obtain martensite structure  after quenched,it will increase the surface hardness and strength.AISI 4130 steel should be carried out between 870ºC-890ºC, hold suitable time for the steel to be thoroughly heated,  then quench in oil, or water.Tempering should be followed  immediately after quenched.

Tempering

Tempering is usually carried out to relieve stresses from the hardening process, and will optimize hardness and mechanical properties. The actual tempering temperature will be chosen to meet the required properties.Heat the AISI 4130 carefully to a suitable temperature ,usually between 400ºC-570ºC, soak at the temperature for 2 hours per 25mm of ruling section, then cool in air.The lower the tempering temperature the greater the strength. However, Tempering between 250-375°C is not advised as tempering within this range will seriously reduce the impact value.

Application

AISI 4130 steel finds many applications as forgings for the aerospace,oil and gas,automotive, agricultural and defense industries etc.
Typical applications for 4130 steel uses include:forged valve bodies, pumps,Aircraft engine mounts,Welded tubing,fittings,Hydraulic tools,etc

Company Profile

Shandong Shanshui Special steel pipe Co.,LTD. Our company was founded in 2014, The headquarters is located in 14th floor, Rongfu Center, Huangshan Road,Liaocheng ,Shandong Province,China.
We specialized in the research and development,production,sales and application promotion of seamless steel pipe. We can provide customer-required Standard,Specification,Material,Application of Carbon steel tube,Alloy steel tube and their machined products etc.    
We have ten years of industry experience, the annual output of the factory is 250,000 tons, non-standard steel tube, super thick wall steel tube, alloy steel tube, super long steel tube, fixed size steel tube are our production advantages.

 

We have perfect production equipment: 
· 50 production workshop        · 76 production workshop        · 90 production workshop 
· 60 Cold Rolling Resources Units(OD10-159mm,THK2-20mm)
Our factory can provide customers with product testing and steel tube machining services,
"OWN PRODUCTION &SALES" production mode, flexible to meet customer needs,for customers to save money.
Our factory's product quality is guaranteed, workshop production control is strict, coordination ability is strong, timely delivery. 
Excellent quality and perfect service are the premise and guarantee to create maximum value for customers!
 

 

Shandong Shanshui Special Steel Co., Ltd. is very honored to receive distinguished customers from Iran, Japan, India and other countries. They came to visit our company and were very satisfied with our workshop facilities and production environment.
We displayed advanced processing machinery and technical equipment, allowing customers to witness our production capacity and quality assurance system. Customers have highly appreciated our production workshops and expressed their recognition and trust in our company.
Customers have shown great interest in the quality and technical level of our products. In the warm reception at the same time, we reached an order contract with the customer. Through the signing of contracts, we have established a long-term and stable partnership with customers.
We sincerely thank foreign customers for their trust and support, at the same time we welcome friends from all over the world to visit the factory, we will be warm hospitality through our joint efforts to promote the smooth progress of cooperation, to achieve mutual benefit and win-win goals.

 

Certifications

 

FAQ

 

What kind of company is Shandong Shanshui Special Steel Co., LTD.?
Shandong Shanshui Special Steel Co., Ltd. is a reputable manufacturer and supplier of top-quality steel products in Shandong province, China. With our dedication to excellence, we specialize in producing a wide range of steel pipes including seamless, welded, and alloy steel pipes.

Our company is committed to providing customers with high-quality and reliable steel products. We have built a strong reputation both domestically and internationally for our consistent product quality and customer satisfaction.

Where is the factory of Shandong Shanshui Special Steel Co., LTD.?

Factory :Zhangshan Industrial Park, Guangping Township, Liaocheng City,Shandong
We have 50, 76, 90, a total of three large hot-rolled seamless steel pipe production lines, and there are 10 fine rolled seamless steel pipe production lines. Among them, the 90-line configuration of Assel limited mandrel rolling machine is the strongest three-roll rolling capacity in China, and with the two-roll sizing machine, it is the only production line that can produce ultra-thick wall specifications and ultra-long steel pipes. We can accept non-standard steel pipe, super thick wall alloy steel pipe, we produce and sell by ourselves, fast delivery, to provide efficient solutions for customers' steel needs.
How about our product quality and after-sales service?
My factory finishing rolling tube in Liaocheng first product quality assurance service, that is: product quality problems, our company can undertake replacement, return and other quality assurance services. Execution in the workshop: process card, work order, 2-hour quality inspection, entrance inspection, exit inspection, etc., to ensure that unqualified products do not produce and do not leave the factory.
What can you buy from us?

Shandong Shanshui Special Steel Co., Ltd. can provide various types of steel pipes, including but not limited to:

   1.Seamless steel pipes: Suitable for high temperature, high pressure, and special applications in industries such as petroleum,natural gas, chemical, and power.

   2.Welded steel pipes: Suitable for general industrial, construction, and structural purposes, such as buildings, bridges, and machinery manufacturing.

   3.Alloy steel pipes: Treated with alloy elements, these pipes have high strength, wear resistance, and corrosion resistance. They are widely used in industries such as petroleum, chemical, power, and aerospace.

   4.Oil pipes: Used for oilfield development and oil transportation, these pipes are resistant to high temperatures and corrosion.

   5.Gas pipes: Used for natural gas transportation, these pipes have high pressure and corrosion resistance.

   6.Hydraulic support pipes: Used in mining, construction, and mechanical equipment as hydraulic supports, these pipes have high strength and corrosion resistance.

In addition, we also provide customized steel pipe products. We can manufacture pipes with special specifications, materials, and processing requirements based on customer needs.