Category Archives: Blog

8620 alloy Structural Steel bar

8620 alloy Steel Structural bar is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other. (8620 alloy Structural Steel bar)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

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

AISI 8620 Structural Steel barChina 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.

8620 alloy Steel bar

8620 alloy Steel bar is a high quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other. (8620 Structural Steel)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

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

AISI 8620 Structural Steel barChina 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.

30CrNiMo8 steel

Alloyed heat treatable steel with a typical tensile strength of 1100 -1300 N/mm². Used for highly stressed components, where the combination of high strength with tenaciousness is of utmost importance. High cold formability: Parts of different shapes can be manufactured, a very good surface condition and a high dimensional accuracy. When cold is formed the smooth surface leads to increased fatigue and vibratory strength.

30CrNiMo8 steel is an Alloy Structural Steel belong to ASTM A29/A29M Steel Grade standard. 30CrNiMo8 steel is used in the Oil and Gas industry and Large Machinery Structural. Otai provides cutting, sawing, milled, machining processing.

The news of the pandemic is updating every day, we hope it will be end soon. the trend of the pandemic abroad is similar to china .however, after the fight with it for about two months, we finally control it. We hope we will be united together, and normal life will come soon. To reward our dear customer, Otai company sends a lot of masks abroad, we hope everything will be better soon.

1) Except for the 42CrMo steel, the 30CrNiMo8 steel is also a key product of Otai company. We have storage in our factory.

2) Otai provides the 30CrNiMo8 steel round bar. The diameter is 20-130mm. It is equivalent to 4340 steel.

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

8620 Structural Steel bar

8620 Structural Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other. (8620 Structural Steel)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

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

AISI 8620 Structural Steel barChina 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.

8620 Structural Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other. (8620 Structural Steel)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

8620 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. AISI 8620 steel Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 8620 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

8620 Structural Steel supplier

8620 Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other. (8620 Structural Steel supplier)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

8620 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. AISI 8620 steel Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 8620 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

8620 alloy Steel supplier

8620 Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other. (8620 alloy Steel supplier)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

8620 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. AISI 8620 steel Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 8620 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

8620 Steel supplier

8620 Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other.(8620 Steel supplier)

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

8620 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. AISI 8620 steel Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 8620 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

8620 Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other.

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

8620 steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. AISI 8620 steel Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 8620 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

8620 alloy Steel is a high-quality Quenched and Tempered Alloy Structural steel. It belongs to the high-quality low carbon, Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. AISI 8620 steel Annealing delivery hardness less than 250HB.

AISI 8620 Alloy structural steel properties is a Nickel chromium molybdenum alloy steel specification. 8620 With a lower carbon content range, AISI 8620 alloy steel has good weldability.  AISI 8620 Steel is equivalent to Din 21NiCrMo2 | W-Nr 1.6523, GB 20CrNiMo, BS 805M20, NF 20NCD2,JIS SNCM220 Steel. Most applications can replace each other.

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

8620 steel data PDF files Down

Form of Supply

8620 Alloy steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar, and steel square block. AISI 8620 steel Round bar can be sawn to your required lengths as one-offs or multiple cut pieces. 8620 alloy steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

A2 steel flat supplier

A2 steel flat 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. (A2 steel flat supplier)

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.

4140 steel sheet: We keep a daily inventory of 1500 tons

4140 steel sheet 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.

1)  4140 steel belongs to the alloy structural steel. After Quenching & Tempering, its hardness is 28-34 HRC.

2) 4140 steel used for bending machine molds.

3) Besides, it can be used to under 2000m deep well of oil drill pipe joint and the fishing tool.

4) Also, it can be used for engineering structural parts, like high tensile shafts, gears, pinions, and spindles.

4140 hr plate: Its heat treatment has good strength and good comprehensive mechanical properties.

The common stainless steel’s chromium content is higher than 12.5%. So it has anti-rust performance. From the analysis of the composition, 4140 steel also has chromium. But its chromium content is only 0.8%-1.1%, which is far lower than the standard for rust prevention. Therefore, 4140 steel is not stainless steel. Please pay attention to its rust prevention when using it.

But 4140 steel can be used to make gears. Because lubricating oil is often used when gears are running. The lubricating oil can protect the gear from rust while protecting the normal operation of the gear.

Otai provides the grinding, milling, polishing, turning, drilling, and other machining services as your required tolerances and size. (4140 steel sheet: We keep a daily inventory of 1500 tons)

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.