ASTM 5140 Alloy Steel Round Bar System 1

ASTM 5140 Alloy Steel Round Bar System 2

ASTM 5140 Alloy Steel Round Bar System 3

ASTM 5140 Alloy Steel Round Bar System 4

ASTM 5140 Alloy Steel Round Bar

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.37-0.44 %	Tensile strength(MPA)	≥980(100)
Si	0.17-0.37 %	Yield strength (MPA)	≥785(80)
Mn	0.50-0.80 %	Elongation (δ5/%)	≥9
Cr	0.80-1.10 %	Reduction in Area (ψ/%)	≥45
Ni	≤0.30 %	Impact (J)	≥ 47
P	≤0.035 %	Impact toughness value αkv (J/cm2)	≥59(6)
S	≤0.035 %	Hardness	≤207HB
Cu	≤0.030 %

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: Can steel round bars be used in the manufacturing of garden tools?: Yes, steel round bars can be used in the manufacturing of garden tools. Steel is a durable and robust material that offers strength and resistance, making it suitable for various garden tools such as shovels, rakes, hoes, and spades. The round bars can be shaped and formed to create the desired tool design and functionality, ensuring durability and longevity in outdoor conditions.

Q: What are the advantages of using steel round bars in construction?: There are several advantages of using steel round bars in construction. Firstly, steel round bars offer exceptional strength and durability, making them ideal for supporting heavy loads and withstanding harsh weather conditions. Secondly, they are highly resistant to corrosion, ensuring long-lasting and low-maintenance structures. Additionally, steel round bars can be easily customized and shaped to fit various construction needs, allowing for flexibility in design. Lastly, steel round bars are readily available and cost-effective, making them a preferred choice for construction projects.

Q: How do you prevent rust on steel round bars?: To prevent rust on steel round bars, you can apply a protective coating such as paint, oil, or a rust inhibitor. Regular cleaning and maintenance, including keeping the bars dry and free from moisture, can also help prevent rust formation.

Q: How do you straighten a bent steel round bar?: To straighten a bent steel round bar, you can use either a hydraulic press or a mechanical straightening machine. The process involves applying gradual pressure to the bent area until it becomes straight again. It is important to ensure even pressure distribution to avoid further damage to the bar.

Q: What are the advantages of using nickel-tungsten alloy steel round bars?: There are several advantages to using nickel-tungsten alloy steel round bars. Firstly, the inclusion of nickel enhances the corrosion resistance of the bars, making them suitable for use in harsh environments. Additionally, the addition of tungsten improves the strength and hardness of the bars, making them highly durable and able to withstand heavy loads and high temperatures. Furthermore, the alloy steel composition provides excellent wear resistance, making these bars ideal for applications that require prolonged use or frequent contact with abrasive materials. Overall, nickel-tungsten alloy steel round bars offer a combination of corrosion resistance, strength, and durability, making them a reliable choice for various industrial applications.

Q: Will the three steel is steel? It is a steel bar?: Your question is inaccurateThread steels are grade two, grade three, grade four, and even grade fiveFirst grade steel generally refers to the wire rod, also known as wire rod, is a ribbed steel bar

Q: What are the different international standards for steel round bars?: There are several different international standards for steel round bars, including ASTM A36, ASTM A615, ASTM A276, EN 10060, DIN 1013, and JIS G4105. Each standard specifies different requirements for the chemical composition, mechanical properties, dimensions, and tolerances of steel round bars, ensuring their quality and compatibility with specific applications.

Q: What are the limitations of steel round bars?: There are several limitations associated with steel round bars, which are important to consider when selecting the appropriate material for a particular application. 1. Weight: Steel round bars can be quite heavy, especially in larger diameters. This can pose challenges when it comes to transportation and installation, particularly in situations where weight restrictions are a concern. 2. Corrosion: While steel is generally known for its strength and durability, it is susceptible to corrosion. When exposed to moisture or certain chemicals, steel round bars can rust and deteriorate over time. This limitation can be mitigated through the use of protective coatings or by opting for stainless steel round bars, which are more resistant to corrosion. 3. Machinability: Steel round bars can be difficult to machine due to their high hardness and strength. This can result in increased tool wear and reduced cutting speeds, leading to higher production costs and longer machining times. 4. Cost: Steel round bars, particularly those made from high-quality alloys, can be relatively expensive compared to other materials. This cost factor may limit their use in certain applications where budget constraints are a concern. 5. Design Flexibility: Steel round bars come in standard sizes and shapes, which may restrict design flexibility in some cases. If a specific shape or size is required, additional processing steps such as cutting or forging may be necessary, adding to the overall production cost. 6. Fatigue Strength: Although steel round bars have excellent strength properties, they can be prone to fatigue failure when subjected to repeated or cyclic loading. This limitation is particularly relevant in applications where the material is subjected to constant stress or vibration. Despite these limitations, steel round bars remain a popular choice in various industries due to their exceptional strength, reliability, and versatility. However, it is essential to consider these factors to ensure that the chosen material meets the specific requirements of the intended application.

Q: Can steel round bars be used for making gates?: Yes, steel round bars can be used for making gates. Steel round bars are a popular choice for making gates due to their strength, durability, and versatility. They can be easily welded together to create the desired gate design and can withstand heavy loads and impacts. Additionally, steel round bars can be galvanized or coated to protect against rust and corrosion, ensuring the longevity of the gate. Overall, steel round bars are a suitable material for gate construction and are commonly used in residential, commercial, and industrial applications.

Q: Can steel round bars be used in food processing industries?: Steel round bars are indeed suitable for use in food processing industries. The food industry often opts for steel as it offers exceptional durability, strength, and resistance against corrosion. Food processing equipment, such as mixers, conveyors, grinders, and slicers, can incorporate steel round bars. Moreover, steel round bars are also applicable in the creation of food storage containers, shelves, and racks. Nonetheless, it is crucial to guarantee that the steel employed in food processing industries adheres to food-grade standards, ensuring utmost hygiene and safety.

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