AISI 12L14 Steel Round Bar Sheet Plate, JIS SUM24L, DIN 1.0718
AISI 12L14 has great machinability and is suitable for case hardening and electroplating. It also is called automatic machine tool processing steel. It is used for machining automation and production line. It is mainly used for small force and strict requirements on size and finish tools, such as watch parts, automobiles, machine tools and etc. It has different names in different countries. People also call it as JIS SUM24L and DIN 1.0718 steel. 12L14 Steel round bar sheet plate properties and chemical composition as below.
| 12L14 Steel Round Bar Sheet Plate Supply Range | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Specification | Surface | |||||||||||||||||
| Round Bar | Dia:1-2000mm; Length: Can be customized We can supply any lenth based on the customer's requirement. | Black Surface/Bright Surface /Grinded/Peeled/Turned | |||||||||||||||||
| Sheet/Plate/Slab | Can be customized | Black Surface/Bright Surface /Grinded/Peeled/Turned | |||||||||||||||||
12L14 Steel Grade Equivalent Chart
| Country | USA | Germany/UK/France | JAPAN | ISO |
|---|---|---|---|---|
| Standard | ASTM A29/A29M-05 | EN 100087-1998 | JIS G4804-2008 | ISO 683/9:1988 |
| Grades | 12L14 | 11SMnPb30(1.0718) | SUM24L | 11SMnPb28 |
12L14 Steel Chemical Composition
| STAND | C(%) | Mn(%) | P(%) | S(%) | Si(%) | Pb(%) |
|---|---|---|---|---|---|---|
| ASTM A29/A29M-05 | ≤0.15 | 0.85-1.15 | ≤0.04-0.09 | 0.26-0.35 | Max 0.10 | 0.15-0.35 |
| EN 100087-1998 | ≤0.14 | 0.90-1.30 | ≤0.11 | 0.27-0.33 | ≤0.05 | 0.20-0.35 |
| JIS G4804-2008 | ≤0.15 | 0.85-1.15 | 0.04-0.09 | 0.26-0.35 | ≤0.10 | 0.10-0.35 |
| ISO 683/9:1988 | ≤0.14 | 0.90-1.30 | ≤0.11 | 0.24-0.33 | ≤0.05 | 0.15-0.35 |
1.0718 Steel Physical Properties
| Physical Properties | Metric |
|---|---|
| Density | 7.87 g/cc |
12L14 Steel Mechanical Properties
| Properties | Metric |
|---|---|
| Hardness, Brinell | 163 |
| Hardness, Knoop | 184 |
| Hardness, Rockwell B | 84 |
| Hardness, Vickers | 170 |
| Tensile Strength, Ultimate | 540 MPa |
| Tensile Strength, Yield | 415 MPa |
| Elongation at Break | 10% |
| Reduction of Area | 35% |
| Modulus of Elasticity | 200 GPa |
| Bulk Modulus | 140 GPa |
| Poisson's Ratio | 0.29 |
| Machinability | 160% |
| Shear Modulus | 80 GPa |
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12L14 Steel Application
12L14 is used to manufacture tools which have requirements of high precision in size, high finish in surface, but low mechanical property, such as gears, shafts, bolts, valves, bushings, pins, fittings, spring seat and machine screw, plastic mold, surgical and dental procedures utensils, certain automobile parts, instruments, etc. Lead free-cutting steel has low contact fatigue, so it is not suitable for parts such as gears and bearings that are subjected to fatigue stress and load.
1.0718 Steel Characteristics
1.12L14 steel can be machined with higher cutting speeds and larger depths of cut.
2.Adding free-cutting elements to get great cutting performance.
3.It is extremely easy to cut on a lathe, increasing tool life and productivity by 40%.
4.Cutting and process are very easy. The processing efficiency gets better than general steel.
12L14 Steel Round Bar Sheet Plate Heat Treatment
Annealing
Heat to 890℃ – 920℃ hold until temperature is uniform throughout the section, and cool in furnace.
Carburizing
Pack, salt or gas carburize at 900℃ holding for sufficient time to develop the required case depth and carbon content, followed by a suitable refining/hardening and tempering cycle to optimize case and core properties.
Core Refinea
Slow cool from carburizing temperature and re-heat to 880℃ – 900℃, hold until temperature is uniform throughout the section and quench as required in oil, water.
Case Hardening
Following core refining, re-heat to 760℃ – 790℃, hold until temperature is uniform throughout the section and quench in water. Temper immediately while still hand warm.
Tempering – After Carburising, Core Refining and Case Hardening
Re-heat 12L14 steel to 120℃ – 230℃, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section and cool in still air.NB. Tempering will improve the toughness of the case with only slight reduction in case hardness. It will also reduce it’s susceptibility to grinding cracks.
Normalizing
Heat to 900℃ – 940℃ hold until temperature is uniform throughout the section, soak for 10 – 15 minutes. Cool in still air.
Stress Relieving
Heat to 500℃ – 700℃ hold until temperature is uniform throughout the section, soak for 1 hour per 25mm of the section, and cool in still air.
Notes on Heat Treatment
Heating temperatures, rate of heating, cooling and soaking times will vary due to factors such as work piece size/shape, also furnace type employed, quenching medium and work piece transfer facilities etc. Please consult your heat treater for best results.
Machining
It is a premium free cutting steel grade suitable for all types of high production and repetition machining.
Welding
12L14 steel is not recommended for welding due to its lead content. It is a health hazard.
12L14 Steel Round Bar Sheet Plate Supply
We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements.
We are a professional special steel stockist and supplier with a high-quality stand for many years. As a professional AISI 12L14 Steel Round Bar Sheet Plate.
supplier, please contacts us for any request for it. Songshun Steel always with you.
Our Advantage
Manufacturing
With 7000 tons of hydraulic forging press, electric slag furnace and other high-end production equipment, we produce a great variety of steels with the best quality in China.
Testing
In order to control the quality, we have complete testing methods to make sure satisfy the customer needs, including Chemical Analysis, Ultrasonic Test and so on.
Massive Stock
We keep a mass stock are over 20000 tons for various steel type, including steel round bar, steel sheet, alloy steel, carbon steel, stainless steel, mold steel, steel coil and etc.
Customized Service
With a professional steel engineers team, we provide customized service according to your project drawing, also provide professional project experience for your special project, such as materials, processing conditions and etc.
World Wide Delivery
For container shipment, standard packing and bundle round bar and flat bar would be applied. It is necessary to fasten & reinforcement would be done to ensure the safety and better unloading at the destination port.
For less than container shipment, wooden box package would be applied for different size materials. For milled or grounded materials, the anti-rust oil would be needed to ensure the surface condition, within the wooden box.
