SAE AISI 1018 Steel

SAE AISI 1018 steel is one of the commonly used low carbon steels. It is usually used as carburized steel. Since most of the 1018 carbon steel is produced by cold drawing, this cold rolled steel is called C1018 (1018 cold rolled steel). AISI C1018 steel (1018 CRS) has good weldability, surface hardening quality, higher mechanical properties and better machinability. Cold drawing increases tensile strength, yield strength, torsional strength, surface hardness and wear resistance, but reduces ductility.

ASTM AISI SAE 1018 hot rolled steel is also known as 1018 HR, and has good toughness, strength, ductility, formability, weldability and workability.

Applications

AISI SAE ASTM 1018 steel has many semifinished and final products such as round bar, flat bar, steel tubing and pipes, etc.

1018 carbon steel is versatile and is commonly used in a variety of carburized parts such as gears, pinions, ratchets, worms, pins, chain pins, pins, machine parts, tools and mold components.

Datasheet & Specification

Below is material AISI 1018 carbon steel datasheet including chemical composition, density, thermal expansion coefficient, thermal conductivity, yield strength, hardness, etc.

AISI SAE 1018 Chemical Composition

ASTM AISI SAE 1018 chemical composition is presented in the following table.

	AISI SAE 1018 Chemical Composition (%)
Steel Grade	C	Mn	P (≤)	S (≤)
1018 (UNS G10180)	0.15-0.20	0.60-0.90	0.040	0.050

AISI SAE 1018 Mechanical Properties

Modulus of elasticity (Young’s modulus): 186 GPa (27×106 psi)

The following tables give AISI SAE 1018 steel mechanical properties of cold-drawn carbon steel rounds, squares, and hexagons.

Steel (UNS)	Tensile strength (Mpa)	Yield strength (Mpa)	Elongation in 50 mm, %	Reduction in area, %	Hardness (HB)	Processing, condition or treatment	Sample Diameter (mm)
AISI 1018 (G10180)	483	413	18	40	143	Cold drawn	16-22
	440	370	15	40	125	Cold drawn	20-32
	414	345	15	35	120	Cold drawn	32-51
	400	220	25	50	115	Hot rolled (steel bar)	20-32

AISI SAE 1018 Physical Properties

Notes: 10-6/K = 10-6.K-1 = (µm/m)/°C

AISI SAE 1018 mild steel coefficients of linear thermal expansion
Value (10-6/K)	Temperature (°C)	Treatment or condition
12.0	0-100	Annealed
13.5	0-400
14.5	0-600

Material 1018 thermal conductivity
Value (W/m·K)	Temperature (°C)	Treatment or condition
51.9	0	Annealed
50.8	100
48.9	200

Specific Heat of AISI SAE1018 Carbon Steel
Value (J/Kg·K)	Temperature (°C)	Treatment or condition
486	50-100	Annealed
519	150-200
599	350-400

Electrical Resistivity of AISI SAE 1018 Carbon Steel
Value (μΩ·m)	Temperature (°C)	Treatment or condition
0.16	0	Annealed
0.22	100
0.29	200

SAE 1018 Steel Heat Treatment

The following table shows AISI SAE ASTM 1018 steel heat treat including annealing, carburizing, carbonitriding, and rockwell hardness.

Full Annealing for Small Steel Forgings

AISI 1018 Steel Heat Treatment
Heat Treat	Temperature (℃)	Hardness	Cooling/Agent	Section thickness
Annealing (full annealing of small steel forgings)	855-900	110-150 HB	Furnace cooling (28 °C/h (50 °F/h)	75 mm

Heat treatment to 855-900 °C (1575-1650 °F), slow cooling from 855 °C (1575 °F) at a rate of 28 °C (58 °F)/hour to 705 °C (1300 °F), section thickness is less than 75 mm (3 in.)

Typical Heat treatment for SAE 1018 Case Hardening

• Carbon temperature: 900-925 °C (1650-1700 °F), cooling method: water or caustic;
• Reheat temperature: 790 °C (1450 °F), cooling method: water or 3% sodium hydroxide;
• Carbonitriding temperature: 790-900 °C (1450-1650 °F), cooling method: oil;
• Temper temperature: 120-205 °C (250-400 °F), for stress relief and improving resistance to cracking (not mandatory).

Carburizing Treatment

Liquid carburizing in noncyanide baths
Grade	Temperature (°C)	Weight (kg)	Case depth (mm)	Time (h)	Quench	Hardness (HRC)	Typical applications
1018	925	0.5-2.0	0.38	0.5-1.0	Brine	50-60	Production tools

Carbonitriding

Production cycles for carbonitriding
Grade	Case depth (mm)	Furnace temperature (°C)	Time in furnace	Quench	Applications
1018	0.40-0.50	870	2 h	Oil at 150 °C (300 °F); tempered at 150 °C (300 °F); for 1 h.	Sliding spur gear, 67 mm outside diameter
				Oil at 150 °C (300 °F); tempered at 260 °C (500 °F) for 1 h.	Spur pinion shaft, 41mm outside diameter

Welding

The recommended preheat and interpass temperatures for 1018 welding:

For thickness ≤50mm (2 in.), the recommended preheat and interpass temperature is above -12 °C.

For thickness (t) 50< t ≤100, the recommended preheat and interpass temperature is 38 °C (for low hydrogen); and 121 °C (for other than low hydrogen).

Postweld heat treatment is optional, temperature is 590-675 °C (1100-1250 °F).

Equivalent Grade

ASTM AISI SAE1018 carbon steel equivalent to European EN (Germany DIN EN, British BSI, French NF…), Chinese GB and Japanese JIS standard.

AISI 1018 equivalent
US				Germany		China		Japan		ISO
Standard	Grade (UNS)	Standard	Grade	Standard	Grade (Steel Number)	Standard	Grade	Standard	Grade	Standard	Grade
AISI; SAE; ASTM A29/A29M	1018 (G10180)	AMS	5069D

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1. Stock view

   

2. Processing and Technology for heating processing

Cutting processing      Quenching              Tempering                  Annealing

       

3. Quality testing

1.      Inspection Institution

Shanghai Fuda Testing Technology Group Co., LTD. Nanjing Branch  

Focus on analysis, testing, testing, r & D four service areas. Analysis fields include component analysis, formula analysis, failure analysis, structure analysis, methodology development and validation, raw material quality control/evaluation, consistency evaluation, feature analysis and other directions; The testing field involves physical and chemical properties testing, toxic and harmful substances testing, flame retardant performance testing, reliability testing and other directions; The testing field involves energy spectrum, electron microscope, spectrum, chromatography, mass spectrometry and other directions; The r&d field involves formula development, formula upgrading, formula customisation, cooperative research and development and other directions.

Beijing Zhongke Chemical Technology Research Institute 

It is a chemical technology research institution based on scientific research and testing. They adhere to paying equal attention to basic research and applied research, and combining applied research and technology transformation, developing into a comprehensive research institute characterised by "task-oriented disciplines". Approved by the relevant national departments, the company has become a third-party analysis and testing technology service unit, and has obtained CMA qualification certification. It has carried out research and development and design, analysis and testing, test and verification, generic processing, information and intellectual property services, providing public services for innovation of technology-based enterprises. Supported by the government innovation Fund, the institute has been awarded as a national high-tech enterprise.

   

2.Inspection Machining

     

   Metal composition testing machine                      Computerised Materials Torsion Testing Machine                Metal bar composite rod bending tensile strength testing machine

       3. Material test certificate

     4. Packaging 

    In the steel export activities, we also need to pack the steel to prevent the steel from being scattered in the transportation process. In the hoisting process, it is necessary to lift the steel. So steel is very necessary in the export process. Below is the picture of packaging：

According to the requirements of the state of steel materials, the use of binding, bare, frame, pallet.

Packing standard: according to the following national standard requirements (the parts beyond the requirements will be specified separately)

GB／T191 packaging-pictorial marking for handling of goods

GB／T4857 (all parts) basic test for transport packages

GB／T4879 rustproof packaging

GB／T5048 damp-proof packing

GB／T7350water-proof packing

GB／T8166 Package cushioning design

GB/T4892-1996  Hard straight square transport packaging size series

GB/T13201-91 Cylinder transport package size series

 GB/T16471-1996Design and make the size limit of transport package 

5. Logistic

       

               By SEA                                                     By Air                                                           By Express

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1. Company profile

Luoyue Precision Metal established in 2018, is a leading Stockists and global distributor for Metal Raw Materials like Steel/Aluminum/ Stainless steel/Copper/ Nickel Rods, Bars, Plates, Sheets,Pipes, fittings, fasteners, Inconel alloys, Wire and Wire-Mesh to customers from aerospace, automotive, electronics, precision manufacturing, ordnance, marine, shipbuilding, oil & gas, power plant and construction.

The company has a high-precision, high-efficiency modern processing site, CNC machine tools and complete testing and inspection technology, and introduces international advanced technologies.

           2. Certificates. (Business certificate/ISO9001/Trading certificate/SGS/FormE)

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          3. Our customers 

                 Customer visits 

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Customer Feedback:

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           HOT FAQ:

Q1. Where is your factory ?

A1: Our company’s processing center is located in Shanghai, China.Which is well equipped with kinds of machines, such as laser cutting machine,mirror polishing machine and so on.We can provide a wide range of personalized services according to the customers’ needs.

Q2. What are your company's main products ?

A2: We are professional one-stop meta supplier for Aluminium/ steel/ stainless steel/ copper etc.  

Q3. How do you control quality ?

A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.

Q4. What are the advantages of your company ?

A4: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.

Q5. How many coutries you already exported ?

A5: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt,Turkey, Jordan, India, etc. We are based in Shanghai, China, start from 2019,sell to Southeast Asia(50.00%),South America(10.00%),North America(5.00%),Eastern Europe(5.00%),Eastern Asia(5.00%),Northern Europe(5.00%),Domestic Market(15.00%),Mid East(10.00%). There are total about 11-50 people in our office.

Q6. Can you provide sample ?

A6: Small samples in store and can provide the samples for free.

Customized samples will take about 5-7days.

Q7Could we visit your factory?  

A7: Sure, we welcome you to visit the factory , check our production lines and know more about our strength and quality.  

Q8: Do you have quality control system?  

A8: Yes, we have ISO, BV, SGS certifications and our own quality control laboratory.  

Q9: Can you arrange the shipment for us?  

A9: Yes, we have designated sea freight and railway freight forwarders with decades of experiences and we get the best  price with earliest vessel and professional service.

Q10: How long is the delivery time?  

A10: Generally it is 7 days if we have the exact goods in our stock. If not, it will take around 15-20 days to get goods ready for delivery.  

Q11: Can I get some samples?  

A11: We are glad to provide free samples to you, but we do not offer the freight.  

Q12: What is your after-sale service?  

A12: We provide after-sale service and offer 100% guarantee on our products.  

Q13: What is your MOQ?  

A13: Depend on the request material, sometimes for customized one have MOQ.

Q14: why should you buy from us not from other suppliers?

Luoyue precision metals (Shanghai) Co., Ltd. is located in Shanghai, China. It is one of the most professional metal material suppliers in China, providing nearly 100 kinds of metal materials, from raw materials to CNC processing

Q15: what services can we provide?

Accepted Delivery Terms: FOB, CFR, CIF, EXW, CIP, DDP, Express Delivery

Accepted Payment Currency:USD,EUR,JPY,CAD,GBP,CNY;

Accepted Payment Type: T/T,L/C,D/P D/A

Language Spoken:English,Chinese,Spanish

Supply Ability

500 Ton/Tons per Month

Packaging & Delivery

Airworthy package. Waterproof cloth, wooden case, craft paper and steel belt packing.

Port: shanghai

Exhibition

Production Workshop

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