AISI 1018 low carbon 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.AISI 1018 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.

AISI 1018 low carbon steel

1018 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
Flat bar/Blcoks	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

1018 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

1018 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

AISI 1018 low carbon steel

FORGING OF AISI 1018 STEEL

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

1018 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

1018 STEEL MACHINABILITY

The machinability of AISI 1018 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

1018 STEEL WELDING

AISI 1018 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.

1018 STEEL APPLICATION

AISI 1018 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.AISI 1018 is used to improve drilling, machining, threading and punching processes,and also can be used to prevent cracking in severe bends.

TYPICAL APPLICATIONS: