Free cutting steel

Free cutting steelrefers to steel with excellent machinability. To improve the free-cutting performance of steel is mainly by adding free-cutting elements to steel alone or in combination.

According to the different free-cutting elements, it can be divided into sulfur free-cutting steel, lead free-cutting steel, calcium free-cutting steel and composite free-cutting steel. According to their different uses, free-cutting steel is divided into automatic machine steel, structural free-cutting steel and special free-cutting steel (heat-resistant steel, stainless steel, tool steel, etc.). According to the different free cutting properties, it can be divided into general free cutting steel, super free cutting steel and so on.

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Country	Steel grade	Standard No.	Main chemical components %
Country	Steel grade	Standard No.	C	Si	Mn	p	S	Cr	Ni	Mo	Other

Japan	SUM23	JIS G4804(2008)	0.09	0.10-0.20	0.75~1.05	0.04~0.09	0.26~0.35
Korea	SUM23	KS D3567(2002)	0.09	0.10-0.20	0.75~1.05	0.04~0.09	0.26~0.35
India	11C10S25	IS 1570-3(2004)	0.08~0.15	0.1	0.80~1.20	0. 06	0.20~0.30
Russia	A11	TOCT1414(1975)	0.07~0.15	0.1	0.80~1.20	0.06~0.12	0.15~0.25
Germany	10S20/1.0721	DIN EN 10087(1999)	0.07~0.13	0.4	0.7	0. 060	0.15~0.25
France	S200	NF A35-561(1992)	0.13	0.08	0.70~1.20	0.11	0.20~0.27
Britain	10S20	BS EN 10087(1999)	0.07~0.13	0.4	0.70~1.10	0.06	0.15~0.25
U.S.A	1215/G12150	ASTM A29/A29M(2005)	0. 09	0.2	0.75~1.05	0.04~0.09	0.26~0.35
Japan	SUM24L	JIS G4804(2008)	0.15	0.10~0.20	0.85~1.15	0.04~0.09	0.26~0.35				Pb 0.10~0.30
Korea	SUM24L	KS D3567(2002)	0.15	0.10~0.20	0.85~1.15	0.04~0.09	0.26~0.35	–			Pb 0.10~0.30
Russia	AC14	TOCT 1414(1975)	0.10~0.17	0.12	1.00~1.30	0.1	0.15~0.30-	0.25	0.25		Pb 0.15~0.35
Germany	11SMnPb30/1.0718	DIN EN 10087(1999)	0.14	0.05	0.90~1.30	0.11	0.27~0.33				Pb 0.20~0.35
France	11SMnPb30	NF EN 10087(1999)	0.14	0. 05	0.90-1.30	0.11	0.27~0.33				Pb 0.20~0.35
	S300Pb	NF A35-561(1992)	0.15	0. 08	1.00-1.60	0.11	0. 30~0. 40				Pb 0.20~0.30
Britain	11SMnPb30	NF EN 10087(1999)	0.14	0. 05	0.90~1.30	0.11	0.27~0.33	–			Pb 0.20~0.35
U.S.A	12L14/G12144	ASTM A29/A29M(2005)	0.15	0.2	0.85~1.15	0.04~0.09	0.26~0.35	一			Pb 0.15-0.35
Japan	SUM43	JIS G4804(2008)	0.40~0.48	0.15-0.35	1.35~1.65	0.04	0.24~0.33
Korea	SUM43	KS D3567(2002)	0.40-0.48	0.15~0.35	1.35~1.65	0.04	0. 24~0.33
India	40C15S24	IS 14698(1999)	0.40-0.48	0.15~0.30	1.35~1.65	0. 04	0.24~0.33	一
Germany	44SMn28/1.0762	DIN EN 10087 (1998)	0.40-0.48	0.4	1.30-1.70	0.06	0.24~0.33	–
France	44SMn28	NF EN 10087(1998)	0.40~0.48	0. 40	1.30-1.70	0.06	0.24~0.33	–
	45MF6	NF A35-562(1992)	0.41~0.48	0.10~0.40	1.30~1.70	0.04	0.24~0.32	–
Britain	44SMn28	BS EN 10087(1998)	0.40~0.48	0.4	1.30~1.70	0.06	0.24~0.33	–
U.S.A	1144/G11440	ASTM A29/A29M(2005)	0.40-0.48	0.2	1.35~1.65	0.04	0.24~0.33
Japan	SUM32	JIS G4804(2008)	0.12~0.20	0.15~0.35	0.60~1.10	0.04	0. 10~0.20	–
Korea	SUM32	KS D3567(2002)	0.12~0.20	0.15~0.35	0.60~1.10	0.04	0.10~0.20
India	25C12S14	IS 1570-3(2004)	0.20-0.30	0.25	1.00~1.50	0.06	0.10~0.18	–
Russia	A20	TOCT 1414(1975)	0.17-0.25	0.15~0.35	0.70~1.00	0.06	0. 08~0.15	0.25	0.25
Germany	15SMn13/1.0725	DIN EN 10087(1999)	0.12~0.28	0.4	0.90~1.30	0.06	0.08~0.18	–
France	15SMn13	NF EN 10087(1999)	0.12~0.28	0.4	0.90-1.30	0.06	0.08~0.18	–
	18MF5	NF A35-562(1992)	0.16~0.22	0.10~0.40	1.10-1.50	0. 040	0.18~0.25	–
Britain	15SMn13	BS EN 10087(1999)	0.12~0.28	0.4	0.90-1.30	0.06	0.08~0.18
U.S.A	1117/G11170	ASTM A29/A29M(2005)	0.14-0.20	0. 20	1.00~1.30	0. 040	0. 08~0.13	–

Item	AISI 4140 1020 1045 Cold Drawn structure mild carbon/alloy forged bright cylinder steel round bar price for sale
Standard	GB/T 700-2006,GB/T 1591-94,JIS G3101-2004, ASTM A36/A36M-05,ASTM A242/A242M-04,ASTM A529/A529M-05, ASTM A572/A572M-06,EN 10025-2-2004
Material	Q195,Q215 A,Q215 B,Q235 A,Q235 B,Q235 C, Q235D,Q275,Q275B,Q275C,Q275D,Q295,Q345,Q390,Q420, Q460, SS330,SS400,SS490,SS540,A36,1,GR.36,50(245),55(380),42(290), 60(415),65(450),S185(1.0035),S235JO(1.0114), S235JR(1.0038), S235J2(0.0117),S275JR(1.0044),S275JO(1.10143),S355JO(1.0553), E295(1.0050),E335(1.0060), S235J2W(1.861),S355J2W(1.8965),10#, 15#20#
Diameter	4mm~800mm
Length	1m,3m,5.8m,6m,12m or as required
Surface	polished,bright,black,coated,2b,ba,mirror,NO.4,8K
Package	Standard export seaworthy or as customers' requirements
Application	1.Mainly used in the manufacture of petroleum, chemical, gas separation and shipping container or other similar devices, such as all kinds of tower vessels, heat exchangers, torage tank and tank car, etc 2.Manufacture all kinds of stamping parts, construction and engineering structure and some of the less important machine structure and parts. 3. Buildings and Bridges,Vehicles, towers and other structures. 4.Used as a floor, workshop escalator, working pedal, ship deck and car plate and so on 5.Make fixed boiler, boiler and other important hull attachments. 6.Pressure vessels, welding gas cylinder steel plate 7.Production of cutting tools, measuring tool and die

We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.

Metalworking Services

CNC Machining

Sheet Metal Fabrication

Metal Welding

Metal Cutting

Metal Bending

Metal Punching

Metal Forging

Metal Sheet Rolling

Tube and Plate Drilling

Heavy Forging Press Capacity

Our heavy-duty forging presses support open-die forging and deformation of large-section forgings, including discs, shafts, blocks, and custom components. This capability enables us to meet the demanding forming requirements of heavy industrial applications.

Heat Treatment Capability

Heat treatment is a critical step in achieving the mechanical properties required for heavy-duty forgings. Our process capabilities meet the strength, toughness, and structural stability requirements for forged components used under demanding operating conditions.

Heavy Shaft Machining

We offer machining capabilities for large forged shafts and long cylindrical components, supporting both rough and finish machining. This capacity is suitable for stepped shafts, rotor shafts, rollers, and other heavy-duty forged shaft components.

Ring Forging Machining

Our machining facilities are capable of handling large ring-shaped forgings and circular parts that require precise turning, face machining, boring, and contour control. This capability is suitable for industrial ring blanks, heavy-duty circular parts, and machined ring forgings.

Cylindrical Forging Machining

We offer machining solutions for heavy-duty cylindrical, hollow, and tubular forgings. This capability supports the machining of sleeves, cylinders, and other thick-walled forged components used in pressure vessels, rotating systems, and general industrial applications.

Inspection & Testing

Quality control is integrated into our production process through the inspection and testing of forged and machined parts. Our capabilities help verify the dimensional accuracy, condition, and quality consistency of industrial forgings prior to delivery.

Packing & Delivery

Finished forgings are properly protected and packaged to minimize the risk of damage during storage and transportation. Our packaging methods ensure the safe domestic delivery and export shipment of machined and high-value forged components.