C15 Steel|1.0401

C15 steel offers a good balance of toughness, strength and ductility which is the most commonly available grade around the world.Although its mechanical properties are not very unique, it still can be easily formed, machined, welded and fabricated. C15 steel has excellent weldability and produces a uniform and harder case,and it is considered as the best steel for carburized parts.It may be hardened by carburizing and by other surface-hardening methods.It can attain typical surface hardness to HRC 58 by carburise.

C15 Steel Supply Form & Size &Tolerance

Form of Supply	Size(mm)	Length(mm)
Round bar	Φ6-Φ1000	3000-10000
Square bar	100 x 100-600×600	3000-6000
Flat bar/Blcoks	Thickness :120-800	2000-6000
	Width:120-1500

Surface Finish	Black-Forged	Black-Rolled	Rough Turned	Grinding	Polished	Peeled	Cold Drawn
Tolerance	(0，+5mm)	(0，+1mm)	(0，+3mm)	Best h9	Best h11	Best H11	Best H11

C15 Steel Chemical Composition & Related Specifications

Grade	C	Si	Mn	P	S
1018	0.15-0.20	0.2-0.4	0.60-0.90	≤ 0.04	≤ 0.05

Germany	UK	China	Japan
C15/1.0401	080A15	15#	S15C

C15 Steel Mechanical Property

Surface Finish	Tensile Strength Mpa	Yield Strength Mpa	Elongation, %	Hardness,HB
Bright Drawn	430 – 750	340 – 600	≥ 12	120 – 220
Smooth Turned	410 – 560	230 – 330	≥22	120 – 170

C15 Steel Forging

Heat to 1150°C – 1280°C
Hold until uniform
Minimum forging temperature 900°C
Air cooling after forged

C15 Steel Heat Treatment

• Normalising: 890–940°C°C,air cooling
• Annealing:870–910°C°C,furnace cooling
• Stress Relieving: 500–700°C,air cooling
• Carburising:880 –920°C
• Core Refining:780–820°C,Quench in water
• Case Hardening:780–820°C,Quench in water
• Carbonitriding:800°C – 875°C,Quench and Temper as required

C15 Steel Machinability

The machinability of C15 steel is rated at 62% of AISI 1112 carbon steel. Machining provides this material with a fine finish, with continuous and hard chips. It is possible to machine this steel in all conditions

C15 Steel Welding

C15 steel can be instantly welded by all the conventional welding processes,such as gas, oxyacetylene, resistance, and submerged melt welding.But welding is not recommended for this steel when it is carbonitrided and carburized.Low carbon welding electrodes are recommended in the welding procedure, and post-heating and pre-heating are not necessary. Pre-heating can be performed for sections over 50 mm. Post-weld stress relieving also has its own beneficial aspects like the pre-heating process.

C15 Steel Application

C15 is used in bending, crimping and swaging processes,and it is suitably used in applications that do not need high strength of alloy steels and high carbon.C15 is used to improve drilling, machining, threading and punching processes,and also can be  used to prevent cracking in severe bends.

TYPICAL APPLICATIONS:

• Shafts
• Spindles
• Pins
• Rods
• Sprocket assemblies
• Axles,bolts
• Fixtures, mounting plates ,spacers
• Machinery parts

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