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EN9 Carbon Steel

We can produce EN9 Carbon Steel stainless steel round rods, EN9 Carbon Steel forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With DuoNian production experience, strict control EN9 Carbon Steel chemical composition and EN9 Carbon Steel mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.

Production specification

Round bar steel: 1mm to 3500mm
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.

EN9 Carbon Steel

EN9 is an unalloyed medium carbon steel. It is supplied at the hardness obtained after hot rolling or cold drawing, with a hardness normally within the range of 180 to 230HB. EN9 is available from stock in bar and can be cut to your requirements. We also offer EN9 plate flame cut to your required sizes and normalised.

TYPICAL ANALYSIS
C.	Si.	Mn.	S.	P.
0.50%	0.25%	0.70%	0.05%	0.05%

Forging:
Heat slowly and uniformly to 1100°C. After forging cool slowly.

Annealing:
Heat uniformly to 700°C. Soak well and cool slowly in the furnace.

Hardening:

Heat uniformly to 820/840°C until heated through. Quench in oil, or water.

Tempering:

Heat uniformly and thoroughly at the selected tempering temperature, between 550/660°C and hold at heat for one hour per inch of total thickness.

Hard Chromium Plating:

After hard chromium plating, the steel should be tempered for approximately 4 hours at 180°C, in order to avoid hydrogen embrittlement.

Welding:

Firstly heat to approximately 100-350°C. Use an unalloyed basic electrode, for welding unalloyed structural steels.

Normalising:
Normalise at 840-870°C, and cool in air.

Stress Relieving:
After rough machining tools should be stress relieved. Soaking time 2 hours after the whole piece has attained a temperature of approximately 675°C. Cool in furnace to approximately 500°C, and then freely in air.

Physical Properties:

Density	Coefficient of Thermal Expansion	Modulus of Elasticity
kg/m	per c from 20 c	N/mm
7800	11.6x10-6	206000

Mechanical properties

EN9 Carbon Steel Mechanical properties,Our production completely according to the EN9 Carbon Steel standards to meet the EN9 Carbon Steel mechanical performance, can also according to the customer request, to meet the requirements of customers of EN9 Carbon Steel mechanical properties.

Heat treatment

EN9 Carbon Steel Heat treatment,Our production completely according to the EN9 Carbon Steel standards to meet the EN9 Carbon Steel Heat treatment, can also according to the customer request, to meet the requirements of customers of EN9 Carbon Steel Heat treatment.

Machining

EN9 Carbon Steel Machining,Our production completely according to the EN9 Carbon Steel standards to meet the EN9 Carbon Steel Machining, can also according to the customer request, to meet the requirements of customers of EN9 Carbon Steel Machining.

Welding performance

EN9 Carbon Steel Welding performance,Our production completely according to the EN9 Carbon Steel standards to meet the EN9 Carbon Steel Welding performance, can also according to the customer request, to meet the requirements of customers of EN9 Carbon Steel Welding performance.

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