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42CrMo hot rolled steel sheet/bar

42CrMo steelbelongs to plastic mold steel in mold steel from the perspective of material classification. It has good mechanical properties and machinability, and is widely used. There are mainly two types of materials, plate and round bar. Plate is used for mold processing Production, round rods are used to machine parts directly, which has been recognized by the industry.

Classification :

Steel Round Bars

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PRODUCT DETAILS

Product introduction

42CrMo4 is a steel for quenching and tempering, which has a good combination of strength and toughness in the quenched and tempered condition. After the oil quenching, the steel will be through hardened up to ø60 mm bar diameter. The microstructure of larger dimensions is not fully martensite. The steel is applicable to induction hardening. The surface hardness will exceed min. 53 HRC. 42CrMo4 can be delivered M-treated in order to optimize the machinability.

Technical data

Chemical Composition
Steel Grade	C	Si	Mn	P	S	Cr	Mo	Cu
35CrMo	0.38～0.45%	0.17～0.37%	0.50～0.80%	≤0.035%	≤0.035%	0.90～1.20%	0.15～0.25%	≤0.30%

Mechanical properties

Yield strength σs/MPa (>=)	Tensile strength σb/MPa (>=)	Elongation δ5/% (>=)	Reduction of area ψ/% (>=)	Impact absorbing energy Aku2/J (>=)	Hardness HBS 100/3000 max
≥930(95)	≥1080(110)	≥12	≥45	≥78(8)	≤217HB

In order to increase the die life to more than 800,000 die times, the pre-hardened steel can be hardened by quenching and low temperature tempering. When quenching, preheat at 500-600℃ for 2-4 hours, and then keep it at 850-880℃ for a certain period of time (at least 2 hours), then put it in oil and cool to 50-100℃ and air cooling, the hardness can reach 50 after quenching -52HRC, in order to prevent cracking, 200℃ low temperature tempering treatment should be carried out immediately. After tempering, the hardness can be maintained above 48HRC.

42CrMo Steel Heat Treatment

Annealing

Annealing in 760±10℃, furnace cooling to 400℃ then air cooling.

Normalizing

Normalizing in 760±10℃, air cooling after out of the furnace.

Notes About Quenching and Tempering Treatment

Must pay attention to the temperature of liquid coolant. And must make sure there are no oil contamination or other impurities. Otherwise, the hardness of steel will be not enough or out of the balance.

Quenching and tempering for billet steel material without processing, then it will get non-uniform hardness. So processing of forging or grinding is necessary before the Q+T.

Warehouse storage

Our company is a quality benchmark enterprise in Shandong Province, a national contract-abiding and credit-abiding enterprise, and a national, industry and group standard unit for "Colored Steel Plate for Building Decoration". We have many customers all over the world, and our products are exported to Asia, the Middle East, America, Europe, Africa and other countries, enjoying a good reputation at home and abroad. Up to now, we have also established long-term, win-win partnerships with a number of large steel mills.

Packing and delivery

We are the first-level agent for Chinese state-owned enterprises Shanghai Baosteel and Taigang Iron and Steel Group. Our products can meet every unique requirement of our customers. We provide customized services. We can support customers with quality inspections if needed. We can provide competitive prices, good quality control, purchasing suggestions. Welcome to inquire and order!

Customer visit

Up to now, we have also established long-term, win-win partnerships with a number of large steel mills. We are the first-level agent for Chinese state-owned enterprises Shanghai Baosteel and Taigang Iron and Steel Group. Our products can meet every unique requirement of our customers. We provide customized services.

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.

CERTIFICATE OF HONOR

OUR SERVICE

1 : Prime quality and reasonable price.
2 : Wide excellent experiences with after-sale service.
3 : Every process will be checked by responsible QC which insures every product's quality.
4 : Professional packing teams which keep every packing safely.
5 : Trial order can be done in one week.
6 : Samples can be provided as your requirements

FAQ

Q1:Are you trading company or manufacturer?

A:We are a set of production, manufacturing, sales, transportation as one of the professional trade company. We have our own factory, specialized laboratories and quality control personnel, product quality is stable.

Q2:Does the product have quality inspection before loading?

A:Of course, all our products have undergone strict quality inspection before packing.

Q3:Can you provide the samples free?

A:Yes, we could provide the free samples, but the freight will be covered by customer. And the freight will be returned after we cooperate.

Q4:What about product prices information?

A:Prices various according to periodic price changes of raw materials.

Q5:What is your delivery time ?

A:The delivery time is usually about 7-15 days. The exact time depends on order quantity and inventory. We could sent out in a week if it has stock.

Q6:What is your terms of payment ?