Special Steel 1.7225 Steel Round Bar / SCM440 Round Bar

Special Steel 1.7225 Steel Round Bar / SCM440 Round Bar

Ref Price:: $300.00 - 500.00 / m.t.

Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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The details of our Steel

1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard

2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate

3. Heat treatment:

Normalized / Annealed / Quenched+Tempered

4. Quality assurance:

All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

Product information

Chemical Composition(%) of SCM440 round bar	C	Si	Mn	P	S	Cr	Mo
	0.38-0.45	≤0.40	0.60-0.90	≤0.035	≤0.035	0.90-1.20	0.15-0.30
Specification of SCM440 round bar	Hot Rolled: Dia.(mm)L(mm)=14-202000-6000
	Forged: Dia.(mm)L(mm)=210-8002000-6000
Application of SCM440 round bar	(1) unibody electrical and electronic mold; (2) plastic mould and die holders; (3) making main shaft of streamer, bolt for 400°C; (4) making the hammer stem and aggravating drill pipe.
Characteristic of SCM440 round bar	(1) High strength and toughness; (2) Good hardenability and the quenching deformation is small; (3) Good processability and easy polishing; (4) Easy texture and platable; (5) The strength and section are bigger than 35CrMo(4135).
Heat Treatment of SCM440 round bar	Forging:1100~900°C Normalization:860~880°C Subcritical Annealing:680~720°C Isothermal Annealing:830~900 670x3h°C Hardening:830~860 oil Tempering:550~650°C
Mechanical Property of SCM440 round bar	Rm(MPa): 1080 Re(MPa): 930 Ae%: 12 Z%: 45 A(S): 63
Delivery Condition of SCM440 round bar	hot rolled, black surface, annealed
Payment Term of SCM440 round bar	L/C,T/T,30% in advance,70% before the shipment

Main product

High speed steel
AISI	M2,M4,M35,M42,T1
DIN	1.3343,1.3243,1.3247,1.3355
JIS	SKH51,SKH54,SKH35,SKH59,SKH2
Cold work tool steel
AISI	D2,D5,D3,D6,A8,A2,O1
DIN	1.2379,1.2601,1.2080,1.2436,1.2631,1.2363,1.2510,1.2327
JIS	SKD10,SKD11,SKD1,SKS3
Hot work tool steel
AISI	H13,H11,H21
DIN	1.2344,1.2343,1.2367,1.2581,1.2713
JIS	SKD61,SKD6,SKD7,SKD5SKT4
Plastic mould steel
AISI	P20,P20+Ni,420
DIN	1.2311,1.2738,1.2083,1.2316
JIS	PDS-3,SUS420J1,SUS420J2
Alloy structural seel
AISI	5140,4340,4135,4140
DIN	1.7035,1.6511,1.7220,1.7225
JIS	SCr440,SNCM439,SCM435,SCM440
Stainless steel
AISI	440C,420,430
DIN	1.4125
JIS	SUS440C
Carbon steel
AISI	1045,1020
DIN	1.1191
JIS	S45C, G3101

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Workshop show

Special Steel 1.7225 Steel Round Bar / SCM440 Round Bar

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q: Can special steel be used in the appliance manufacturing industry?: Yes, special steel can be used in the appliance manufacturing industry. Special steel, also known as alloy steel, offers enhanced properties such as durability, corrosion resistance, and high temperature resistance. These qualities make it suitable for various appliance components, including heating elements, motor shafts, and structural parts.

Q: What are the main advantages of using special steel in the aerospace industry?: The main advantages of using special steel in the aerospace industry are its high strength-to-weight ratio, excellent corrosion resistance, and superior heat resistance. Special steel allows aircraft to be lighter, yet still maintain the necessary structural integrity and safety standards. Its resistance to corrosion ensures the longevity of the aircraft, even in harsh environments. Additionally, special steel's ability to withstand high temperatures makes it suitable for use in jet engines and other crucial components, ensuring optimum performance and safety in aerospace applications.

Q: What are the main applications of special steel in the food processing machinery?: Special steel is commonly used in food processing machinery due to its unique properties and benefits. The main applications of special steel in food processing machinery include ensuring hygiene and cleanliness, resistance to corrosion and wear, high strength and durability, and compatibility with food safety regulations.

Q: How does special steel contribute to sustainable construction?: Special steel contributes to sustainable construction in several ways. Firstly, special steel is highly durable and has a longer lifespan compared to traditional building materials. This means that structures built with special steel require less maintenance and repairs over time, reducing the overall environmental impact. Secondly, special steel is often made from recycled materials, such as scrap metal, which helps to conserve natural resources and reduce waste. The recycling process also requires less energy compared to producing new steel, further reducing the carbon footprint. Additionally, special steel offers high strength-to-weight ratio, allowing for lighter and more efficient construction designs. This leads to reduced material consumption and transportation costs, as well as minimizing the load on the foundation and infrastructure. Lastly, special steel is highly resistant to corrosion and can withstand extreme weather conditions. This resilience ensures the longevity of the structures, reducing the need for replacements and minimizing construction waste. Overall, special steel's durability, recyclability, lightweight nature, and resistance to corrosion contribute significantly to sustainable construction practices by minimizing environmental impact, conserving resources, and promoting long-lasting structures.

Q: What are the main characteristics of corrosion-resistant castings?: The main characteristics of corrosion-resistant castings include the ability to withstand exposure to corrosive environments without degradation or rusting, high resistance to chemical attack, excellent durability, and long-lasting performance. These castings are typically made from materials such as stainless steel, nickel-based alloys, or other corrosion-resistant alloys, which provide enhanced resistance against oxidation, pitting, and crevice corrosion. Additionally, corrosion-resistant castings often possess good mechanical properties, including high strength and hardness, making them suitable for applications in industries such as marine, oil and gas, chemical processing, and wastewater treatment.

Q: How does special steel contribute to the infrastructure sector?: Special steel plays a crucial role in the infrastructure sector by providing enhanced strength, durability, and resistance to various environmental factors. It is used in the construction of bridges, buildings, and other critical infrastructure projects, ensuring structural integrity and safety. Additionally, special steel is utilized in the manufacturing of machinery and equipment used in the sector, further contributing to its efficiency and reliability.

Q: How does electrical steel contribute to the production of transformers and motors?: Electrical steel, also known as silicon steel, plays a crucial role in the production of transformers and motors. Its unique magnetic properties, such as high permeability and low core loss, allow for efficient energy transfer and reduced power losses. This material is specifically designed to enhance magnetic induction and minimize eddy currents, ensuring optimal performance in electrical machines. By using electrical steel in the core of transformers and motors, manufacturers can increase energy efficiency, improve power transmission, and reduce overall operational costs.

Q: What are the common challenges in heat treatment of special steel?: To achieve the desired material properties, careful attention must be given to several challenges encountered in the heat treatment of special steel. One primary challenge revolves around the necessity for meticulous temperature control throughout the heating and cooling stages. Special steels typically have specific temperature ranges for heat treatment that must be strictly adhered to in order to attain the desired microstructure and mechanical properties. Failing to maintain precise temperature control can result in inadequate or inconsistent heat treatment, ultimately leading to suboptimal material performance. Another challenge lies in the potential distortion or warping of the steel components during the heat treatment process. Special steels often possess intricate designs or complex shapes, making them more susceptible to distortion when subjected to high temperatures. This distortion can have adverse effects on the overall quality and dimensional accuracy of the final product. Consequently, careful consideration must be given to the selection of suitable heating and cooling methods, as well as the utilization of fixtures or jigs to minimize distortion. Moreover, special steels may contain alloying elements that significantly influence the heat treatment process. Elements like chromium, molybdenum, or vanadium can alter the steel's hardenability, tempering response, or transformation behavior. Their presence can introduce additional challenges when determining the optimal heat treatment parameters, necessitating adjustments to heating and cooling rates, soak times, or quenching media. Lastly, achieving uniformity in heat treatment across a batch of special steel components can prove to be challenging. Variations in size, shape, or composition within a batch can result in inconsistent heat treatment outcomes. Controlling the heating and cooling rates, ensuring proper circulation of the heat treatment media, and implementing effective process monitoring techniques are essential in achieving consistent and uniform material properties. In conclusion, the heat treatment of special steel encompasses challenges such as precise temperature control, distortion/warping, the influence of alloying elements, and achieving uniformity across a batch. Successfully addressing these challenges requires a comprehensive understanding of the steel's composition, meticulous process planning, and the utilization of appropriate process controls and monitoring techniques.

Q: How does special steel perform in high-temperature mechanical fatigue conditions?: Special steel performs well in high-temperature mechanical fatigue conditions due to its unique composition and properties. It exhibits excellent strength, toughness, and heat resistance, enabling it to withstand cyclic loading and high temperatures without experiencing significant degradation or failure. The special steel's exceptional performance in such conditions makes it an ideal choice for applications that involve continuous exposure to elevated temperatures and mechanical stresses, ensuring long-term reliability and durability.

Q: Can special steel be used in tool manufacturing?: Yes, special steel can be used in tool manufacturing. Special steel is often preferred for tool manufacturing due to its exceptional hardness, toughness, and resistance to wear and corrosion. These properties make it highly suitable for producing durable and efficient tools that can withstand demanding applications.

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