Premium Steel Square Bar - ASTM/AISI/DIN/JIS/BS Standards, Quenching & Tempering

• Customization: Available
• Processing Object: Metal
• Molding Style: Forging
• Molding Technics: Casting
• Application: Machinery Parts
• Material: Steel
• Heat Treatment: Normalizing
• Surface Treatment: Rough Machining
• Forging Tolerance: +/-0.5mm
• Standard: GB
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• International Standards: ASTM, AISI, DIN, JIS, BS
• Delivery Condition: Quenching+Tempering, Normalizing, Anealing
• Shape: Round Bar, Square, Shaft, Ring, Cylinder
• Delivery Surfaces: Black, Rough Machning Bright, Fine Maching Bright
• Alloy No: 9cr2mo, 18crmimo6, 30Cr2Ni2Mo
• Transport Package: Wooden Cartons
• Specification: Customization
• Trademark: weirun
• Origin: Jiangsu, China
• Production Capacity: 3000 Tons/Month

Product Description

Product Description

Chemical Composition (%):

	C	Si	Mn	P	S	Cr	Mo	Ni	Standard
9Cr2Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	1.70-2.10	0.20-0.40	≤0.25	GB/T13314-2008
18CrNiMo7-6	0.15-0.21	≤0.4	0.50-0.90	≤0.025	≤0.035	1.50-1.80	0.25-0.35	1.4-1.7	EN 10084-2008
30Cr2Ni2Mo	0.26-0.34	0.17-0.37	0.50-0.80	≤0.020	≤0.020	1.80-2.20	0.30-0.50	1.80-2.20	GB/T3077-2015

Main Products

Company Profile

Jiangsu Weirun Forging Co., Ltd.
Founded in 2001, Jiangsu Weirun Forging Co., Ltd. stands as a trailblazer in China's industrial landscape, with a storied legacy in alloy steel smelting and a sophisticated portfolio of forged product offerings. The company is a proud conglomerate, comprising Jiangsu Longtai Alloy Technology Co., Ltd. and Jiangsu Xinya New Materials Co., Ltd., each a pillar of innovation and quality.
With a specialization in comprehensive projects that encompass alloy steel smelting, cutting-edge electroslag remelting, precision forging, and high-quality mold production, Jiangsu Weirun has meticulously developed a robust industrial ecosystem. This integrated system includes efficient material recycling, precise smelting techniques, superior electroslag casting, and exceptional forging, paired with the craftsmanship of precision mold machining. Serving both domestic and international clientele, the company has positioned itself as a global leader.
Sprawled over an expansive 60,000 square meters, our state-of-the-art manufacturing facility is equipped with the latest machinery and technological innovations, including an impressive collection of electroslag furnaces and high-powered air hammers. Additionally, our facilities boast modern mechanical processing units, sophisticated heat treatment installations, and advanced testing devices, all of which underscore our commitment to industrial innovation. With fixed assets of 153 million yuan and a robust annual industrial output of 300 million yuan, our enterprise employs over 200 dedicated professionals, including more than 20 technical experts. We're proudly recognized among the top fifty enterprises in Danyang City based on annual sales and tax contributions.
Driven by an unwavering pursuit of innovation, Jiangsu Weirun has, in recent years, strategically recruited elite technical talent. By forming strategic alliances with prominent domestic universities and research institutes, the company has propelled technological innovation and advancement. These collaborative efforts have resulted in securing 5 nationally recognized invention patents and 3 utility model patents, reflecting our steadfast commitment to pioneering excellence and groundbreaking achievements.
With an impressive annual production capacity exceeding 30,000 tons of steel ingots and a forging capacity reaching 15,000 tons, our product range significantly impacts various industries, including wind power, chemical engineering, machinery, automotive, shipbuilding, power generation, metallurgy, mining, and petrochemicals. Guided by the visionary goal of 'pursuing excellence and building a world brand,' Jiangsu Weirun strategically aligns with the global market through an international brand strategy. Our unwavering dedication to quality is validated by prestigious certifications such as ISO9001, China CCS, France BV, and Germany TUV. As a premier supplier and service provider of forged products, Weirun remains committed to unparalleled professionalism and expertise, ensuring the highest standards of service and excellence for our valued clients.

FAQ

• What is the difference between forging and casting?

  Forging: It is the process of transforming a solid from one shape to another. Casting: It is the process of transforming a shapeless liquid metal into a solid with a shape. The so-called casting is the process of casting molten metal into a model to obtain a casting. The casting profession focuses on the metal melting process and the control of processes during the casting process. Forging is a plastic forming process in the solid state, which can be divided into hot processing and cold processing. Forgings include extrusion, drawing, roughening, punching, and so on. Casting is a solid liquid solid process, while forging is a solid to solid process where a solid can change its shape into another shape at high temperatures. There are still differences in the shape process and process of the two.

• How to choose high-quality forgings?

  In the quality inspection of forgings, there are mainly external observation methods and internal inspection methods. The appearance method, as the name suggests, is to observe the appearance of the product, such as the shape, geometric dimensions, surface condition, etc. of the forging, in order to understand whether it meets the standards and whether there are external defects. Specifically, it is to check whether the external dimensions of the forging meet the specifications and whether there are defects on the surface, such as cracks, wrinkles, bubbles, indentations, pits, impurities, scratches, etc. on the surface of the forging. Internal testing mainly involves analyzing the chemical composition, macroscopic and microscopic structures, and mechanical properties of forgings. This inspection process requires the use of specialized instruments for high magnification inspection, with the aim of checking for any phenomena such as fractures and shrinkage within the forging, as well as defects such as dendrites and white spots, disordered flow lines, and throughflow. It also includes the tensile strength, ductility, hardness, plasticity, and heat resistance temperature of the forging.

• What are the characteristics of the forging process for blank forgings?

  The forging process of circular forgings mainly consists of the following processes: pier roughening, elongation, punching, and expanding. The difference between free forging and ring rolling processes is mainly in the process of expanding holes. In the production of ring forgings, free forging is usually used to expand the hole with a horse screw, while ring rolling is mainly used to expand the hole with rolling.