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Jinan Tianzan is an enterprise exporting steel to more than 50 countries and regions in Europe, southeast Asia, Africa, etc., the company constantly updates advanced technology and innovation to provide customers with quality products, welcome all customers and friends from all over the world to come to our company

Copyright © 2020 Jinan Tianzan Steel Co.,Ltd

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E-mail：sales@lctzsteel.com

Phone：+86 13176150233

Whatsapp：+86 13176150233

Add：No.359 Shunhua Road ,Hi-tech Zone District, Jinan City, Shandong Province

One-stop solution for steel products

8740 Alloy round steel

Phone：+86 13176150233

Whatapp：+86 13176150233

Since its establishment, Jinan Tianzan Steel Co., Ltd. has standardized operation and strict management. Relying on the advantages of rich iron and steel resources in Shandong province, the company's proprietary technology and famous and excellent featured products, it promotes technological progress, optimizes product structure, moderately expands production scale, and its business performance continues to grow steadily.

Our company


NameAlloy round steel
StandardGB/T 700-2006,GB/T  1591-94,JIS G3101-2004,
ASTM A36/A36M-05,ASTM A242/A242M-04,ASTM A529/A529M-05,
ASTM A572/A572M-06,EN 10025-2-2004
MaterialQ195,Q215 A,Q215 B,Q235  A,Q235 B,Q235 C,
Q235D,Q275,Q275B,Q275C,Q275D,Q295,Q345,Q390,Q420, Q460,
SS330,SS400,SS490,SS540,A36,1,GR.36,50(245),55(380),42(290),
60(415),65(450),S185(1.0035),S235JO(1.0114), S235JR(1.0038),
S235J2(0.0117),S275JR(1.0044),S275JO(1.10143),S355JO(1.0553),
E295(1.0050),E335(1.0060), S235J2W(1.861),S355J2W(1.8965),10#,
15#20#
Diameter4mm~800mm
Length1m,3m,5.8m,6m,12m or as  required
Surfacepolished,bright,black,coated,2b,ba,mirror,NO.4,8K
PackageStandard export  seaworthy or as customers' requirements

8740 Alloy round steel


Standard export packing (inside:water proof paper,outside:steel covered with strips and pallets)


20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)


8740 Alloy round steel

8740 Alloy round steel

This alloy is forged at a starting temperature of around 2200oF and can be forged as low as 1700oF(925oC).

After forging, the alloy should be slowly cooled, but it can also be transported to a furnace at a temperature close to the forging finishing temperature, soaked, and air-cooled.

A microstructure consisting of coarse lamellar pearlite to coarse spheroidite is regarded as ideal for this alloy’s machinability.   Austenitizing at 1525oF, furnace cooling to 1340oF, then cooling to 1180oF at 20oF/hr can produce such a structure.   An iso-anneal at 1225°F is another option.

AISI 8740 | UNS# G87400 is roughly equal alloy steel to AISI 4140.   This alloy is being used in applications that require a high level of strength, hardness, and wear resistance.   It’s extensively utilized as forged fasteners with great strength.

If you are one that requires this alloy steel material, we guarantee that you will receive the best 8740 Alloy bar stocks and 8740 Alloy round bar stocks that meet your requirements.