Category Archives: Blog

A2 steel vs O1: For the different material comparisons, which one we should choose to use?

A2 tool steel China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

Advantage of A2 steel in repair welding operation: since the preheating and post-heating temperature is lower than SKD11, repair welding operation is easier.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts.

O1 tool steel is a high-quality cold work tool steel, It belongs to the high-quality high carbon alloy tool steel.

O1 steels are mainly used for short-run tooling for cold forming dies, blanking dies, and cutting tools operating at ambient temper.

O1 tool steel typical applications include medium-run dies and intricate press tools. Also include drawing punches, broaches, bushings, and lathe centers. Including chuck jaws, master cavity sinking hobs, and paper cutting machine knives. Including plug gauges, thread gauges, and precision measuring tools. Also commonly used in applications such as cams, cloth cutting knives, and cold taps. Including reamers, collets, cutting hobs, strip slitting cutters, trimmer dies. Including tube expander rolls, plastic molds, and woodworking knives.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. We are welcome to your kind inquiry.

A2 steel vs 4340 steel: For the different material comparisons, which one we should choose to use?

A2 tool steel China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

Advantage of A2 steel in repair welding operation: since the preheating and post-heating temperature is lower than SKD11, repair welding operation is easier.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts.

4340 alloy structural steel belongs to gear steel.

It is used for important tempering parts that require good toughness, high strength, and large size. Such as heavy machinery high-load shaft, turbine shaft with a diameter greater than 250mm. Also, it can be used for helicopter rotor shaft, turbojet engine turboshaft, blade, high-load transmission parts, crankshaft fasteners and etc. Besides, it can also be used for rotor shaft and blade with an operating temperature of over 400℃. It can also be used to make important parts with special performance requirements after nitriding treatment, which can be used for ultra-high-strength steel after low-temperature tempering or isothermal quenching.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. We are welcome to your kind inquiry.

4140 vs 4130

4140 vs 4130: what is the difference between 4140 steel and 4130 steel?

A： Today we are still discussing 4140 steel. As we know that 4140 steel belongs to the alloy structural steel.

B： I found a steel that is very similar to 4140 steel—4130 alloy steel.

A： From the analysis of the composition, they all contain Chromium and molybdenum. 

B： Yes. But the carbon content of 4140 steel is 0.38%-0.43%, while the carbon content of 4130 steel is 0.28%-0.33%.

A： From the analysis of the hardness, 4140 steel is usually supplied ready heat treated to hardness in 18-22 HRC.

B：4130 alloy steel’s hardness is 17HRC.

A： In terms of use, 4140 steel can be used for engineering structural parts, like high tensile shafts and gears.

B：4130 steel finds many applications as forgings in the aerospace and oil and gas industries – as forged valve bodies and pumps. 

A： So what is the difference between them?

B：4130 steel is similar to 4140 steel which has a higher carbon level, giving 4130 steel improved weldability, at the expense of through-thickness strength.

A： I hope that customers should consider what kind of performance you need for the steel you purchase and then buy on demand. 

B： The above is about the difference between P20 steel and 4140 steel. If you want to know more, you can visit our website：www.otaialloysteel.com

A： You can also send an email or call us.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4140 vs 4340

4140 vs 4340: what is the difference between 4140 steel and 4340 steel?

A： Let me share with you something interesting. My customer—— Mike asked me what is the difference between P20 steel and 4140 steel.

B： Distinguish from the type of steel, 4140 steel, and 4340 steel are all alloy steels.

A： From the analysis of the composition, they all contain Chromium and molybdenum.

B： Yes. But 4340 steel has Nickel content, while 4140 steel does not.

A： From the analysis of the hardness，4140 steel is usually supplied with ready heat treated to hardness in 18-22 HRC.

B： Hardened and tempered 4340 alloy steel can be nitrided, giving a surface hardness of up to 60 HRC. 

A： In terms of use, 4140 steel can be used for engineering structural parts, like high tensile shafts and gears.

B：4340 steel can be also used for engineering structural parts, like high tensile shafts and gears. 

A： So what is the difference between them?

B：4340 steel is used in most industry sectors for applications requiring higher tensile/yield strength than 4140 steel can provide.

A： I hope that customers should consider what kind of performance you need for the steel you purchase and then buy on demand. 

B： The above is about the difference between P20 steel and 4140 steel. If you want to know more, you can visit our website：www.otaialloysteel.com

A： You can also send an email or call us.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4340 steel vs 9310 steel: For the different material comparisons, which one we should choose to use?

4340 steel China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4340 alloy structural steel belongs to gear steel.

It is used for important tempering parts that require good toughness, high strength, and large size, such as heavy machinery high-load shaft, turbine shaft with a diameter greater than 250mm, helicopter rotor shaft, turbojet engine turboshaft, blade, high-load transmission parts, crankshaft fasteners. Gear, etc. It can also be used for rotor shaft and blade with an operating temperature of over 400℃. It can also be used to make important parts with special performance requirements after nitriding treatment, which can be used for ultra-high-strength steel after low-temperature tempering or isothermal quenching.

9310 Alloy Steel (also known as AISI 9310 steel) is low alloy steel composed primarily of nickel and chromium.

The standard is ASTM A322. It shows high hardenability, high core hardness, and high fatigue strength. It also possesses solid ductility, weldability, and machinability properties. Its Components with large cross-sections require high toughness and core strength. It is Mainly used for such as critical aircraft engine gears, automotive applications, structural components, gears, rods, heat-treatable shafts, high-performance helicopter transmission gears, and other components.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (4340 steel vs 9310 steel)

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

4340 steel vs 8620 steel: For the different material comparisons, which one we should choose to use?

4340 steel China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

4340 alloy structural steel belongs to gear steel.

It is used for important tempering parts that require good toughness, high strength, and large size. Such as heavy machinery high-load shaft, turbine shaft with a diameter greater than 250mm. Also, it can be used for helicopter rotor shaft, turbojet engine turboshaft, blade, high-load transmission parts, crankshaft fasteners and etc. Besides, it can also be used for rotor shaft and blade with an operating temperature of over 400℃. It can also be used to make important parts with special performance requirements after nitriding treatment, which can be used for ultra-high-strength steel after low-temperature tempering or isothermal quenching.

8620 is the structural steel with the hardenability guaranteed by American standards, and the standard is as follows: ASTM A29/ A29m-2015 (hot forged and cold processed carbon steel and alloy steel bar).

It has high hardenability, no tempering brittleness, good weldability, little tendency to form a cold crack, good machinability, and cold strain plasticity. Generally used in quenching and tempering or carburizing state, used for manufacturing small and medium-sized automobile, tractor engine and gear in the transmission system, oil drilling and metallurgy open mine cone bit teeth and teeth body, manufacturing steam turbine gear whole rotor internal combustion engine connecting rod valve section forgings. At the same time, the surface of 8620 steel after carburizing heat treatment has relatively high hardness, wear-resistance, and contact fatigue strength, while the core retains good toughness and can withstand high impact load. It can be used as automobile bearing, spindle, gear, mechanical parts, and other impact-resistant, wear-resistant workpieces.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size.

Otai does not act as a material handler. We possess proprietary technology and continuously iterate. We undertake every order to end and solve customers’ problems without any hesitation on responsibility. We are welcome to your kind inquiry.

A2 Steel vs 4140 steel: Their material comparison

A2 tool steel China suppliers, wholesale, distributors, and stockholder–Dongguan Otai Special Steel Co Ltd. We Otai is a manufacturer and has a large quantity of stock in our warehouse. We supply in Round bar, gauge plate steel, pipe, tube, rod, square, hexagonal, blanks, plate, sheet, precision ground flat bar. Including precision ground bar stock, hollow bar, we provide black surface and black surface alloy steel material.

A2 Tool Steel/1.2363 is a German Cold work tool alloy steel material grade.

A-2 steel is an air hardening alloy chromium-molybdenum-Vanadium die steel. As cold work steel, its grade contains 5% chromium. In applications that require greater size stability, A2 steel is preferable to O1 tool steel.

A typical application such as blanking die, the molding dies, blanking dies, stamping die, stamping die, die, extrusion die, boxing, shear knife blade, instrumentation, knurling tools, volume, head, and machine parts.

4140 steel, the steel has good workability, machining deformation of small, anti-fatigue performance is quite good.

On the hardenability of steel, 4140 heat treatment has good strength and good comprehensive mechanical properties, good manufacturability, high yield. The highest temperature is 427 degrees Celsius. 4140 strength, high hardenability, and good toughness, quenching deformation of small, high temperature creep rupture strength, and high. It is used for manufacturing forgings with higher strength and larger tempering cross-section than 35CrMo steel. Such as big gear for locomotive traction, supercharger drive gear, rear axle, connecting rod, and spring clamp with the great load. Also can be used for drilling pipe joint and fishing tool of oil deep well below 2000m and can be used for bending machine mold, etc.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. We are welcome to your kind inquiry. (A2 Steel vs 4140 steel)

4140 hot rolled plate producing

4140 steel plate

4140 plate stocking

4140 hot rolled plate

4140 hot rolled plate stocking

4140  plates loading

5 trucks totally 160 tons 4140 steel plates loading

4140 plates 42CrMo4 plates SCM440 plates 1.7225 plates

Tool steel making 1.2379

1.2379 Tool Steel | D2 | SKD11 | Cr12Mo1V1 Alloy Steel

16MnCr5 Case Hardening Steel

1.16MnCr5 This grade is a low alloy chromium, manganese case hardening steel.

Carburised 16MnCr5 gives a hard case with a strong core whilst retaining a degree of toughness.

It is suited for applications which require a combination of toughness and wear resistance and is commonly supplied in round bar.

2.16MnCr5 Chemical composition

3.16MnCr5 Mechanical Properties

The mechanical properties of annealed DIN 16MnCr5|1.7131 gearing steel (typical for steel) are outlined in the table below:

4.16MnCr5 Applications

DIN 16MnCr5|1.7131 steel is widely used for a variety of applications in the used to the gearings in rotating machinery.

Typical applications such as valve bodies, pumps and fittings, the high load of wheel, bolts, double-headed bolts, gears, internal combustion engine. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machine, railway vehicle, and mining machinery transmission shaft on the steel ball, roller and shaft sleeve, etc.

https://otaialloysteel.com/16mncr5/

16MnCr5 Case Hardening Steel

60Si2MnA Alloy Steel Spring Steel

Otai Specials steel 60Si2MnA Alloy Steel Round Bar 60Si2Mn Spring Steel