Mechanical Properties of Chinese low alloy steel: Q345B

Q345B steel is a Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, and is used for a number of manufacturing purposes. It is a steel with less than 0.2 percent of its composition made up of carbon, less than 0.55 percent of its composition made of silicon and several impurities (mostly sulfur, chromium and nickel). This particular grade of steel is a 'general purpose' manufacturing steel in construction equipment field, such as Q345B is basic material of making excavator bucket and excavator boom arm attachments

The major benefit of this grade of steel is its mild temper. It's easy to form and easy to weld,

Mechanical Properties

1, Yield Strength

A yield strength or yield point is the material property defined as the stress at which a material begins to deform plastically. Prior to the yield point the material will deform elastically and will return to its original shape when the applied stress is removed, Yield strength of Q345B is 345 MegaPascals. Like most steels of its grade, it suffers elongation before it pulls apart, typically at 20-21 percent of its initial length.

2, Tensile strength

The tensile strength of a material is the maximum amount of tensile stress that it can take before failure, for example breaking. Steel tensile strength is expressed in units of force divided by cross sectional area; in the Metric system, this unit is known as the Pascal. One Pascal is a Newton (the force needed to accelerate a one kilogram object to a velocity of one meter per second) per square meter. The tensile strength of Q345B steel is rated at 470 to 660 MegaPascals (where mega is million)

3, Hardness (HB)

 Brinell scale hardness characterizes the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science, The typical test uses a 10 millimetres (0.39 in) diameter steel ball as an indenter with a 3,000 kgf (29.42 kN; 6,614 lbf) force, copper hardness is 35HB, Pure Aluminium is 15HB,

From Victory Construction Equipments Co., Ltd

repeat order of 18m excavator long boom arm for India customer

In end of March, 2015. our customer in India decides to re-place a order,customer still need 18m long reach boom arm for their EX350LC machine,

this time, customer just need us provide long reach boom arm, because they have a EX200 bucket and bucket cylinder, so we need to design the long reach arm that can fit EX200 bucket and cylinder. this long reach configuration is reasonable, after 20 days, we shipped the 18m long reach excavator booms to Mumbai port, below are finished product pictures

for more information, please visit our website:http://www.longreachboom.com

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CAT320D 18m excavator long reach boom arm for Turkmenistan customer

In Dec.  2014, we shipped two sets of 18m long reach boom arm for CAT320D excavator to a Turkmenistan customer, they need the long reach excavator to do some dredge work on seaside.

loading of 18m long reach boom arm for CAT320D

18m long boom arm for CAT320D from customer side

For more information, pls visit our website: http://www.longreachboom.com

15m long reach boom arm kit for PC200-8 to a Sri Lanka customer

In spring 2015, a buyer from Pakistan placed 2 nos of 15m Long Reach Boom Kit for their PC200 excavator, 15 long reach with 0.5m3 standard bucket is standard long reach configuration, we finish product within 20 days and shiped to Colombo port,

Below are pictures of finished product

15m long reach boom for PC200

15m long boom arm for pc200

For more information, pls visit our website: http://www.longreachboom.com

Excavator Hydraulic rock grapple

rock grapple

Application:

For waste metals disposal, stones, woods loading, unloading and moving,

Characteristics:

1. Mechanical excavator grapple: moving Jaw driven by Hydraulic bucket cylinder, and other Jaw fixed by a seamless steel rod to stick
2. Hydraulic excavator Grapple can be with or without swing per customers\’ request. 360 degree power rotation
3. With inner teeth for antiskidding,

Specification of Excavator Grapple

if you use it for log grapple, we suggest grapple without inner teeth, because teeth may hurt log,

For more information, please visit our website:http://www.longreachboom.com

16m High Reach Demolition Attachment for JS235 for Enland Customer

After several rounds of negotiation in past 3 months, in Oct. 2014, customer decided to buy the 16m high reach demolition attachment for their JS235 excavator, and they have a special requirement that is they want to exchange demolition with standard boom arm quickly, we design a coupling boom that is part of demolition boom, and it is also a part of standard boom,

16m high reach demolition attachment

16m demolition attachment

For more information, pls visit our website: http://www.longreachboom.com

60-90 percentage new excavator best for installing long reach boom arm

60-90% new excavator is best  for installing long reach boom arm

From the customer point of view, we generally do not recommend the new purchase of excavators modified to Long Reach Boom Arm over the warranty period because of the new purchase of excavators did not back to the machine agents easily,

we also don’t recommend 50% new excavator to modify to long reach system, because the machine useful life is coming to a status of all aspects of performance loss, especially the hydraulic system. it is not worthy to invest on the old machine

For more information, pls visit our website: http://www.longreachboom.com