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18CrNiMo7-6 hot rolled steel round bars

18CrNiMo7-6 is a case hardening steel with high toughness. There are a number of variants with high cleanliness requirements. All variants possess tighter composition ranges compared to the standard. produced with the quality class IQ (isotropic quality). This ensures a very low number of elongated sulphide inclusions which will give more isotropic properties. The high oxidic cleanliness will enable the steel to meet the same high cleanliness demands as for re-melted qualities

Product Category：

Steel Round Rod

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info@mingdingsteel.com

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+8615553113555

18CrNiMo7-6 is a case hardening steel with high toughness. There are a number of variants with high cleanliness requirements. All variants possess tighter composition ranges compared to the standard. produced with the quality class IQ (isotropic quality). This ensures a very low number of elongated sulphide inclusions which will give more isotropic properties. The high oxidic cleanliness will enable the steel to meet the same high cleanliness demands as for re-melted qualities

Product parameters

Chemical Composition

Standard	Grade	C	Mn	P	S	Si	Ni	Cr	Mo
EN 10084	18CrNiMo7-6	0.15-0.21	0.50-0.90	≤ 0.025	≤ 0.035	≤ 0.04	1.4-1.7	1.5-1.8	0.25-0.35
	1.6587

Physical Property

Density, g/cm3	7.85
Specific heat capacity J/(kg.K)	460
Electric resistivity Ohm.mm2 /m	0.18
Electric conductivity Siemens.m/mm2	5.55
Modulus of elasticity Gpa	210
Thermal expansion 10^6 m/(m.K)	100 ℃	200 ℃	300 ℃	400 ℃	500 ℃
Thermal expansion 10^6 m/(m.K)	11.1	12.1	12.9	13.5	13.9

Mechanical Property

Size mm	≤ 11	12-30	31-63
R Mpa	1180-1420	1080-1320	980-1270
Rp 0.2 Mpa	≥ 835	≥785	≥ 685
A %	≥ 7	≥ 8	≥ 5
C %	≥ 30	≥ 35	≥ 35
Kv J	≥ 44	≥ 44
Hardness HB	354-406	327-384	295-373

Forging

DIN 1.6587 | 17CrNiMo6 |18CrNiMo7-6 forging temperature:900 – 1100°C,cool slowly in the sand after forged.

Heat Treatment

Normalizing:850 – 880°C/air
Soft annealing:650 – 700°C/furnace
Stress relieve:630- 650oC
Carburising:880 – 980°C
Core hardening:830 – 870°C/water
Intermediate annealing:630 – 650°C
Case hardening:780 – 820°C/water
Tempering:150 – 200°C

Surface Hardness

Treated to improveshearability(+S):Max 255HB
Soft annealed(+A):Max 229HB
Treated to hardness range(+TH):179-229HB
Treated to ferrite-pearlite structure and hardness range(+FP):159-207HB

Application

DIN 1.6587 | 17CrNiMo6 |18CrNiMo7-6 steel for the parts which require core tensile strength and high hardness. Susceptible to the large seized parts with high wearing resistance and loading such as: Heavy Duty Bushings and Bearings, Cam Followers, Clutch Dogs, Compressor Bolts, Extractors, Fan Shafts, Heavy Duty Gears, Pump Shafts, Sprockets, Tappets, Wear Pins, Wire Guides etc..

Factory video

Shandong Mingding Supply Chain Management Service Co., Ltd. was established in 2013, focusing on the production, processing and trade of metal materials. We have a professional team to provide quality service, we sincerely welcome customers at home and abroad to visit our company for guidance and long-term cooperation.

Warehouse storage

The company has the most advanced production equipment and automatic control system, to ensure the most reliable product quality. In addition, we also have a professional international trade and logistics team. With quality products and excellent service, we have established a large number of long-term customers all over the world.

Packing and delivery

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

Production Technology

Our main products include high quality carbon steel, stainless steel products,galvanized steel products, aluminum and copper. We can also provide cutting, punching, bending, polishing, shearing, wire drawing and other related service.

Honor

Application

Our company is set production processing and trade as one. The company has the most advanced production equipment and automatic control system, to ensure reliable product quality and sufficient supply capacity. Our main products are stainless steel, silicon steel, galvanized steel, carbon steel, aluminum products and other series. Applicable to engineering, coal mining, shipping, aviation, boiler, machinery, military and other fields. We sincerely welcome customers from all over the world to visit our company to discuss long-term cooperation.

Architectural field

Automotive field

Aviation field

Chemical industry field

FAQ

How do you package the product?

The inner layer is covered with waterproof paper, packed in iron and secured by fumigated wooden brackets. It can effectively protect products from corrosion in the process of sea sample transportation.

Are the products inspected before shipment?

Of course. All our products go through strict quality tests before they are packed. Those that fail will be destroyed.

Can I visit your factory?

Of course. We welcome customers from all over the world to visit our factory.

What certifications have your products passed?

We have ISO 9001, SGS, EWC and other certifications.

Can you provide samples?

Of course, we can send samples all over the world. Our samples are free of charge, but the customer needs to bear the Courier charge

What is the loading port?

Normally, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. You can choose other ports according to your needs.

Steel Round Rod