SAE 8620 20CrNiMo ASTM A29 Alloy Steel for Fasteners

• After-sales Service: Can Exchange Goods
• Warranty: 2 Year
• Type: Carbon 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.: 20CrNiMo ASTM A29
• 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

SAE 8620 alloy steel is a low carbon alloy steel with good quenching and tempering properties.
Its chemical composition consists of about 0.18-0.23% carbon, about 0.70-0.90% manganese, about 0.40-0.70% chromium, and about 0.15-0.35% molybdenum. In addition, it contains some elements such as nickel and silicon.
The advantages of SAE 8620 alloy steel include good weldability, tunability and good toughness.
It is commonly used in the manufacture of gears, reducers, bearing parts and drives where high strength and wear resistance are required. By heat treatment in the temperature range, its performance can be further improved.

SAE 8620 Alloy Steel is a low alloy nickel, chromium, molybdenum case hardening steel, generally supplied in the as-rolled condition with a maximum hardness HB 255max. SAE 8620 alloy steel offers high external strength and good internal strength, making it highly wear-resistant. SAE 8620 steel has a higher core strength than grades 8615 and 8617.
SAE 8620 alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. Prehardened and tempered (uncarbonized) 8620 can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content. SAE 8620 alloy steel is suited for applications that require a combination of toughness and wear resistance. This grade is commonly supplied in a round bar.

Detailed Photos

 

 

Product Parameters

Chemical composition:
The following table shows the chemical composition of SAE8620 steel:

Standard	Grade	C	Mn	P	S	Si	Ni	Cr	Mo
ASTM A29	8620	0.18-0.23	0.7-0.9	0.035	0.040	0.15-0.35	0.4-0.7	0.4-0.6	0.15-0.25
DIN 1654	1.6523/ 21NiCrMo2	0.17-0.23	0.65-0.95	0.035	0.035	<=0.40	0.4-0.7	0.4-0.7	0.15-0.25
EN 10084	1.6523/ 21NiCrMo2-2	0.17-0.23	0.65-0.95	0.025	0.035	<=0.40	0.4-0.7	0.35-0.70	0.15-0.25
JIS G4103	SNCM220	0.17-0.23	0.6-0.9	0.030	0.030	0.15-0.35	0.4-0.7	0.4-0.65	0.15-0.3
BS 970	805M20	0.17-0.23	0.6-095	0.040	0.050	0.1-0.4	0.35-0.75	0.35-0.65	0.15-0.25

 Mechanical Properties:

Properties	Metric	Imperial
Tensile strength	530 MPa	76900 psi
Yield strength	385 MPa	55800 psi
Elastic modulus	190-210 GPa	27557-30458 ksi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Izod Impact	115 J	84.8 ft.lb
Hardness, Brinell	149	149
Hardness, Knoop (converted from Brinell hardness)	169	169
Hardness, Rockwell B (converted from Brinell hardness)	80	80
Hardness, Vickers (converted from Brinell hardness)	155	155
Machinability (hot rolled and cold drawn, based on 100 machinability for AISI 1212 steel)	65	65

Heat treatment:
This alloy may be hardened by heating to 1500 F followed by a water quench. Carburize at 1650 to 1700 F in an appropriate carburizing medium and oil quench to harden. Improved carburized case and core properties can be obtained by furnace cooling from carburizing at 1650 - 1700 F and then reheating to 1575 F.

Hardening:
The AISI steel 8620 will be austenitized at around 840°C - 870°C, and oil or water quenched depending upon section size and intricacy. Cool in Air or Oil required.

Tempering:
Tempering of heat-treated and water quenched parts of  SAE 8620 steel (not carburized) is done at 400 F to 1300 F to improve case toughness with minimal effect on its hardness. This will also reduce the possibility of grinding cracks.

Physical Properties:
The physical properties of  SAE 8620 alloy steel are highlighted in the following table.

Properties	Metric	Imperial
Density	7.85 g/cm3	0.284 lb/in³

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.