1018 Steel | AISI 1018|1.0401|C15|080A15

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.

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	2000-6000

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

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:

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

1018 Steel Buying Guide

AISI 1018 steel is low-carbon mild steel with excellent compressive strength and toughness. It’s highly weldable and recognized as the best steel that can be carburized. Numerous companies are producing 1018 steel but the question is, how do we find the best quality 1018 steel from the best manufacturer?

It might interest you to know that not all 1018 steel has the same quality of components and that’s what this guide is all about. We are going to help you differentiate and find the most suitable 1018 steel to buy and from the best manufacturer, you can trust for quality when buying any type of steel.

What is the AISI in 1018 Steel?

For the American Iron and Steel Institute, the AISI is an acronym for a short term. The term AISI only helps to identify and differentiate particular steel from others and as well shows how steel is processed.

So when you talk about AISI 1018 steel you should remember that its a steel that is manufactured by its terms

What’s the Chemical Composition of 1018 Steel?

As I said earlier it’s important to know about 1018 steel before buying it to understand the real composite of AISI 1018 steel. It is made up of the following components:

-Manganese (Mn) – 0.60-0.90

-Carbon (C) – 0.15-0.20

-Sulfur (S) – 0.05 (max)

-Phosphorous (P) – 0.04 (max)

-Iron (Fe) – Balance

These are the components of AISI 1018 Steel and their composite materials.

Some variations will be noticeable since manufacturers place and combine them in different ways.

Knowing the components used in making 1018 steel is very important but you must as well know that companies combine the elements differently and that’s why you only need to buy from a trusted manufacturer.

What the 1018 Steel grading number represents

You might not understand why 1018 is attached to the name of this steel but it simply helps to identify a particular steel type and its elements. For instance, 1018 represents a type of carbon steel that has not been modified and contains 0.18 percent carbon.

There are different types of steel in the market and the grading numbers are used to differentiate different types of steel.

To go into details, A four-digit number is designated for carbon steels, the first number being the main alloying elements, the second digit indicating the elements tg (top grade), and the last two digits indicating carbon amount by weight in hundredths of a percentage point.

What are the Properties of 1018 Steel?

Just like every other steel, 1018 contains thermal, mechanical and physical properties. To make it easier for you to understand, we are going to explain each of the Thermal, mechanical and physical properties to help you understand more about AISI 1018 steel.

Thermal Properties

The AISI 1018 carbon steel thermal properties are presented in the table below.

Properties	Metric	Imperial
Thermal conductivity	51.9 W/mK	360 BTU in/hr.ft².°F

Mechanical Properties

AISI 1018 carbon steel drawn in the cold is shown in the following table.

Properties	Metric	Imperial
Tensile strength	440 MPa	63800 psi
Yield strength	370 MPa	53700 psi
Modulus of elasticity	205 GPa	29700 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Poisson’s ratio	0.29	0.29
Elongation at break (in 50 mm)	15%	15%
Hardness, Brinell	126	126
Hardness, Knoop (converted from Brinell hardness)	145	145
Hardness, Rockwell B (converted from Brinell hardness)	71	71
Hardness, Vickers (converted from Brinell hardness)	131	131
Machinability (based on AISI 1212 steel. as 100 machinabilities)	70	70

Physical Properties

The AISI 1018 carbon steel’s physical properties are shown below

Properties	Metric	Imperial
Density	7.87 g/cm³	0.284 lb/in³

IS AISI 1018 Steel hard enough?

The question of whether 1018 is hard enough lies in what you intend to do with it. However, 1018 steel is mild low carbon steel recognized for its good mixture of strength, ductility, and hardness.

It can be welded easily compared to other harder steels and its regarded as the best steel for carburized components

The surface preparation, chemical composition, rolling and heating processes are subject to specific manufacturing controls.

All these processes are designed to produce an excellent quality product suitable for the production of welding, fodder, boiling, machining, cold drawing and heat treatment processes.

How Do Manufacturers Produce 1018 Steel?

The manufacturing process of 1018 steel requires the mixing of different elements together to form the base. The elements used are mostly carbon, iron and molybdenum. Also, other elements that can be added in the formation for 1018 steel are phosphorus, manganese, silicon and chromium.

However, other elements can be mixed to determine the hardness and weldability of 1018 steel. The type of element used to manufacture 1018 steel can be decided based on the application requirements.

Where is AISI 1018 Steel Used?

AISI 1018 steel is designed to be used for different applications. These are some of the most common uses for AISI 1018 steel.

-It is used in the processes of bending, crimping, and swaging.

-AISI 1018 mild/low carbon steel is used in carburized parts such as worms, gears, pins, dowels, non-critical components of tool and die sets, tool holders, pinions, machine parts, ratchets, dowels, and chain pins.

-It is widely used for fixtures, mounting plates and spacers

-It is appropriate for applications that do not require high alloy steel strength or high carbon content.

-It has a high strength surface that includes worms, dogs, drops, sticks, liner, special bolts, ratchets, chain pins, petroleum tool pins, crawling rods, anchor pins, stubble pins, and more.

-It is used for boiling, processing, threading and punching.

-It is used to prevent severe curves from cracking

Which 1018 Steel Manufacturer Should You Trust?

One of the biggest problems when buying AISI 1018 steel or any other type of steel is choosing the right manufacturer who doesn’t compromise quality.

However, since you’re already on this page you have nothing to be worried about. Waldun steel company is the best steel manufacturing company you can trust

About Waldun steel manufacturing company

In case you care to know Waldun steel is the most reliable 1018 steel wholesaler in China. Apart from dominating the Chinese steel market. We’re also in partnership with world-renowned companies.

Not only will you get the best AISI 1018 steel from Waldun Steel, but you will also be able to obtain the most suitable 1018 steel designed for different applications.

Interested to buy or enquire about 1018 steel?

It’s as simple as picking up the phone and dialing our phone number!

You can also send an email to us.

Hey, don’t panic about the price, our company gives free quotes and it’s a simple process, call our customer service department phone number, make a request of what you want and then receive the rates and price quote.