30CRMOV9 / 1.7707 ALLOY STEEL

Classification :

30CrMoV9 is a steel which in general is intended for the fabrication of quenched and tempered parts, which are generally machined and subsequently nitrided.

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Steel Round Bars

Product introduction

30CrMoV9 is a steel which in general is intended for the fabrication of quenched and tempered parts, which are generally machined and subsequently nitrided. The alloy 30CrMoV9 is usually produced by EAF /VD /LF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers’ requirements. Bars are usually supplied bright in the annealed condition, or bright annealing specially.

Technical data

CHEMICAL COMPOSITION OF 30CRMOV9

C	Mn	Si	P	S	Cr	Ni	Mo	V
0.26-0.34	0.40-0.70	0.40 max	0.035 max	0.035 max	2.30-2.70	0.60 max	0.15-0.25	0.10-0.20

MECHANICAL PROPERTIES OF 30CRMOV9

Process	Diameter(mm)	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A5 (%)	Impact Value Kv (J) Room Temperature
QUENCHED AND TEMPERED	160 max	900 min	700 min	12 min	35 min
QUENCHED AND TEMPERED	160-330	800 min	590 min	14 min	35 min

PHYSICAL PROPERTIES OF 30CRMOV9

Youngs module (GPa)	Poisson´s ratio (-)	Shear module (GPa)	Density (kg/m3)
210	0.3	80	7800
Average CTE 20-300°C (µm/m°K)	Specific heat capacity 50/100°C (J/kg°K)	Thermal conductivity Ambient temperature (W/m°K)	Electrical resistivityAmbient temperature (µΩm)
12	460 - 480	40 - 45	0.20 - 0.25

HEAT TREATMENT OF 30CRMOV9:

Soft Annealing: Heat to 680-720oC, cool slowly. This will produce a maximum Brinell hardness of 248.
Nitriding:
Gas/plasma nitriding temperature (gas, salt bath): 570-580oC
Gas/plasma nitriding temperature (powder, plasma): 580oC
Surface hardness after nitriding: 800 HV
Hardening:Harden from a temperature of 850-880oC followed by oil quenching.

TEMPERING OF 30CRMOV9:

Tempering temperature: 570-680oC.

FORGING OF 30CRMOV9:

Hot forming temperature: 1050-850oC.

AVAILABLE SHAPES :

Black bar /Flat bar / Square bar /Pipe, /Steel strip, /sheet
Bright – peeled + polishing, centerless grinding
Forged – ring, tube, pipe casing, discs, shaft

TYPICAL APPLICATIONS OF 30CRMOV9:

Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on., Mechanical gears, gear shaft, main axis, valve rod, Mechanical parts – connecting rod, bolt and nut, Multidiameter shaft, Pressure vessel, seamless pipe

warehouse storage

The annual output of the factory is 400,000 tons, and the current inventory is more than 100,000 tons, which can greatly save the purchasing time of customers and ensure the production cycle and product quality of customers. We are a quality partner for domestic and foreign customers. At present, there are 14 steel production lines for processing, bending, coating, heat treatment, cutting, drilling, chamfering, conditioning, surface treatment and 13 sets of processing equipment.

Packing and shipping

Our main products are: carbon steel plate, carbon steel pipe, carbon steel coil, stainless steel plate, stainless steel coil, stainless steel profile, galvanized plate, galvanized coil, color coated steel coil, ppgi/ppgl and a wide range of high quality steel products.

Customer visit

Li Cheng (Shandong) Metal Materials Co., LTD. has the right to import and export, and its products are exported to more than 20 countries in Asia, Africa, Europe, North America and other regions. Complete processing equipment, perfect quality assurance system, well received by customers.We are willing to first-class technology, first-class equipment, first-class service wholeheartedly and friends from all walks of life sincere cooperation!

Cooperation Case

Applicable to construction, petroleum, chemical, electric power, metallurgy, urban gas, heat pipe network, Bridges, railways, vehicles, ships and other industrial fields and construction, infrastructure and other engineering fields. Complete testing equipment, strong technical force, can implement GB, ASTM, JIS, DIN and other standards.

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Steel Round Bars