Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A681, DIN 1.2379, SAE J437, J438

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Min Order Qty:
100 m.t.
Supply Capability:
500000 m.t./month

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Item specifice:

Standard: AISI,JIS,GB,BS,DIN,API,EN,ASTM Technique: Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring Shape: U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
Surface Treatment: Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated Steel Grade: Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B) Certification: ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Thickness: 13-300mm Length: 6-12m Net Weight: 2mt

Product Description:

Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A6

 

Product Description of Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A6

1. Steel grade: ASTM4140, SCM440, 42CrMo, DIN1.7225

2. Length: 6M-12M
3. Diameter: 16mm-300mm

4. Product range: round bar, flat bar, square bar

5. Technique: Hot rolled, forged, cold drawn

 

Specification of Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A6

Material

       SCM4140

Round bar

Dia(mm)

16-300mm

Process

EAF + LF + VD + Forged + Heat Treatment (optional)

Length (mm)   

Max 12m

Heat treatment

Normalized / Annealed / Quenched / tempered

Flat bar

Thickness(mm) 

8-500mm

Delivery condition

Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)

Width(mm)

70-200mm

Test

Ultrasonic test according to SEP 1921-84 D/d

Length (mm)   

Max 12m

 

Chemical Composition of Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A6

C

Si

Mn

Cr

  Mo

 P

S

0.38~0.43

0.15~0.35

0.75~1.00

0.8~1.1

0.15~0.25

≤0.035

<0.04< td="">

 

Photo Show of Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A6

Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A681, DIN 1.2379, SAE J437, J438

Packing and Delivery:

Packing in bundle package, or as customer's requirements.

Delivery Detail: 45 days after receiving the deposit.

 

Usage and Applications of Hot Forged Tool Steel Round Bar D-2, 42crmo4, ASTM A6

1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.

2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.

3. Some special material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.


Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

Astm 615 Bs4449 B500B Deformed Steel RebarsAstm 615 Bs4449 B500B Deformed Steel Rebars 

 

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Q:The difference between galvanized round bar and galvanized flat steel?
Round steel (grade 1 steel) belongs to ordinary low carbon steel with low strength. However, the plasticity of the round bar is stronger, that is, the round steel has a larger deformation before it is pulled off.It has been widely used in the fields of hardware, construction, automobile, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, space, etc.. The most extensive machining of general machine parts, general rod type steel parts, CD pole, bolt, nut.Refers to the galvanized flat steel width 12-300mm, thickness 4-60mm, cross section is rectangular and with pure edge of galvanized steel. Galvanized flat steel can be finished steel, also can be galvanized pipe blank and galvanized belt. With high strength, light structure: strong grid welding structure, so that it has high load, light structure, easy lifting and other features, beautiful appearance, durable.
Q:What is the tensile strength of Q235 round steel?
Nominal diameter 8-20 mm, yield point is greater than or equal to 235MPa, tensile strength greater than or equal to 370MPa, elongation is greater than or equal to 25%.
Q:How many positive and negative tolerances are allowed for round steel GB?
Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Among them, 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets
Q:How do you know the diameter and weight of a round bar?
The weight / weight / length is /3.14, and then the more is the radius. Then *2 is the diameter.Formula: pi * (D/2) - *L* weight = weight
Q:What is the difference between strip steel and round steel? Where are they mainly used?
Difference between round bar and other steel bars:(1), is not the same, round shape light round, no pattern without ribs, other steel surface appearance is engraved or ribbed, cohesive force that cause steel and concrete, and the bond strength of steel and concrete in the other.(2) the composition is different. Round steel (grade a steel) belongs to ordinary low carbon steel, and most other steel bars are alloy steel.(3), the strength is not the same, low strength steel, and other steel with high strength, the diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, while the other bars in the break before the deformation is much smaller.
Q:Is round steel bar round steel?
Yes.From the shape of points for the light round steel, crescent steel, rebar.From the strength of reinforcement is divided into one level (235), two (335), three (435), four (435)Cold drawn from the production process (first tensioning and long pull method), cold and so on
Q:The diameter of 20 solid round steel bend into a circle, what machine bending?
Hydraulic steel bar cutting and bending machineThe hydraulic steel bar cutting and bending machine is a dual-purpose machine which uses hydraulic technology to cut and bend steel bars. It has high automation and convenient operation.Structure: hydraulic type steel bar cutting and bending machine mainly consists of hydraulic transmission system, cutting mechanism, stubborn mechanism, engine, airframe and so on.Working principle: an electric motor drives two sets of plunger hydraulic pumps, one group pushes off the piston, and the other drives the rotary hydraulic cylinder to drive the rotary working disc to rotate.Cut off the working principle of mechanism in cutting piston is arranged in the middle column and the center of the valve spring, in turn, due to the action of the spring, the middle hole make the center column left valve hydraulic cylinder, high pressure oil is also from the eccentric shaft road to tank. In the cut, a human powered piston, the center hole center column valve blocked the hydraulic cylinder, the plunger pump to the hydraulic cylinder through high pressure oil into the oil valve, high pressure to push the piston movement, the piston drives the cutter to cut tendons. At this point, the thrust of the pressure spring is greater than the pressure in the hydraulic cylinder, the valve will return to its original position, and the hydraulic oil will flow along the oil channel of the central oil hole back into the tank. The return stroke of the piston is achieved by the rebound force of the plate spring.
Q:What is the difference between steel and flat steel, round steel and steel?
On the whole, the square section is square, flat section is rectangular, steel surface after finishing the round steel or steel wire (also called steel, silver bar).
Q:Special steel bar steel products used to do what
But the red hardness difference of this kind of steel, that is, when the working temperature is greater than 250 degrees, the hardness and wear resistance of steel will decline rapidly, and lose their ability to work. In addition, carbon tool steels, such as those made of larger parts, are difficult to harden and easy to produce
Q:What is the reason that the diameter 130-45 round steel will break after welding?
You say this is a better situation, generally in a few days after welding on the crack, the most afraid of the key parts, to be a major accident. No. 45 steel can not be welded, such as welding, it is necessary to preheat before welding and after welding heat treatment.

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