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65Mn hot rolled steel round bars

65Mn high carbon steel is mainly used in the manufacture of various small-section flat springs, round springs, clockwork, etc. It can also be used to manufacture spring rings, valve springs, shock absorbers, clutch reeds and brake springs.

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Steel Round Bars

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65Mn hot rolled steel round bars information

65Mn steel is a Chinese GB standard spring steel grade, Manganese (Mn) improves hardenability, so the strength, hardness, elasticity and hardenability are higher than that of 65# steel, but it has overheat sensitivity and temper brittleness. Water quenching tends to form cracks. The annealed state has good machinability, low cold deformation plasticity, and poor weldability.
65Mn high carbon steel is mainly used in the manufacture of various small-section flat springs, round springs, clockwork, etc. It can also be used to manufacture spring rings, valve springs, shock absorbers, clutch reeds and brake springs.

Chemical and Mechanical

Chemical Composition

The table below lists 65Mn high carbon steel chemical composition based on heat analysis.

Chemical Composition, %
Standard	Grade	C	Si	Mn	P, ≤	S, ≤	Cr, ≤	Ni, ≤	Cu, ≤
GB/T 1222	65Mn	0.62-0.70	0.17-0.37	0.90-1.20	0.030	0.030	0.25	0.35	0.25

65Mn Material Properties

Density: 7.85 g/cm3

		Mechanical Properties
Standard	Grade	Tensile Strength, MPa, ≥	Yield Strength, MPa, ≥	Elongation, %, ≥	Reduction in Area, %, ≥	Brinell Hardness, HBW, ≤
GB/T 1222	65Mn	980	785	8.0	30	302

Notes: Bars with a diameter and side length of not more than 80 mm and flat steels with a thickness of not more than 40 mm.

Heat Treatment Specification

		Heat Treatment
Standard	Grade	Quenching temperature, °C	Quenching medium	Tempering temperature, °C
GB/T 1222	65Mn	830 ± 20	Oil	540 ± 20

Annealing process: Annealing temperature (860 ± 10) °C, heat preservation for 45-60min, furnace cooling to (750 ± 10) °C, heat preservation for 3-3.5h, and furnace cooling to 650-660 °C, then cooling out of the furnace or slow cooling in a heat preservation pit.

Storage video

Warehouse storage

The group company and factory cover an area of more than 800 mu, with more than 1,500 employees, and its business covers more than 20 countries and regions around the world. Xinghan Group is committed to developing new types of steel products and building a first-class coated sheet and steel manufacturing enterprise with international competitiveness. Xinghan Group hopes to grow into a widely respected and sustainable global resource-based enterprise through continuous pursuit of excellence, create better social, economic and environmental benefits, and bring more competitive value returns to employees and customers.

Packing and delivery

The company has major production lines such as pickling, cold rolling, hot dip galvanizing, hot dip galvanizing, thick plate galvanizing and color coating, forming an annual production capacity of 1 million tons of pickling coil, 1 million tons of cold rolled sheet and 900,000 tons of hot dip galvanized sheet. Galvanized and hot-dip galvanized aluminum zinc silicon steel sheet scale 450,000 tons thick galvanized steel plate scale 300,000 tons color coated steel plate scale is one of the largest steel and non-ferrous metal smelting and processing suppliers in Shandong Province.

Customer visit
The company adheres to the development strategy of "seeking development by science and technology, seeking efficiency by management", adheres to the core values of "people-oriented, integrity, responsibility and excellence", adheres to the development system of "green products and green industry", "promotes high-quality beyond development in an all-round way", and realizes the vision of "building a first-class aluminum processing service enterprise with international competitiveness".

Application field

The main supply fields are: aerospace, national defense equipment, military weapons, chemical industry, shipbuilding, nuclear energy, trains, containers, environmental protection, precision machining, auto parts, machinery, electronic products, molds, medical treatment Equipment, construction, decoration, etc.

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FAQ

Q:How long is your delivery time?

A:Within 5 days for stock size, 15-30 days for customized size.

Q:How can I get an accurate quote?

A:Please provide the information of prodcuts standard, material, size and quantity.

Q:When can I get your reply after the inquiry.

A:Within 15 minutes during working time, whthin 12 hours during non-working time.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness,coating and the number of tons you need to purchase.

Q:Can you provide sample ?

A: We can provide the samll samples in stock for free, as long as you contact us. Customized samples will take about 5-7days.

Q:How many coutries you already exported ?

A: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.

Q: Can we visit your factory?

A: Sure, we welcome you to visit our factory , check our production lines and know more about our strength and quality.

Q:Can you send samples?

A:Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.

Steel Round Bars