The Counterweight Blocks Used on Ships

• Application: Aviation, Electronics, Industrial, Medical, Chemical, Optical Industry
• Standard: ASTM
• Purity: 90%~97%
• Alloy: Alloy
• Shape: Standard or Customized
• Type: Balance or Counterweight
• Model NO.: Tungsten heavy alloy balance or counterweight
• Supply State: Sintered, Forged and Vacuum Treatment
• Customized: Sheet/Plate/Foil/Strip According to Drawi
• Material: 90%-97%Wnife or 90%-97%Wnicu
• Grade: ASTM B777-15, AMS 7725, AMS-T-21014
• Density G/Cc: 16.85~17.30, 17.15~17.85, 17.75~18.35, 18.25~18.85
• Ultimate Tensile Strength: 758MPa, 724MPa, 689MPa
• Class: 1, 2, 3, 4
• Yield Strength: 517MPa
• Elongation: 5%, 3%, 2%
• Nonmagnetic: Ultimate Strength 648MPa, 648MPa, Na
• Heat Treatment: Sintering
• Other Quanlity: AMS-T-21014, Mil-T-21014
• Dimension: Customized or as Per Drawings
• Transport Package: Export Wooden Box with Foam Inside
• Specification: Standard sizes or customized
• Trademark: Kefeng
• Origin: China
• HS Code: 81019990
• Production Capacity: 5000kgs Per Month

Product Description

As an ISO accredited tungsten plate products manufacturer, Kefeng Powder Metallurgy Co., is capable of offering various types of Tugnsten alloy products. Tungsten heavy alloy balance or counterweight meet a consistently high standard of flatness, roughness and machinability.  Additionally Kefeng is also able to offer a 15-30 days delivery and to cope with mass production of 3000kgs to 5000kgs.   Kefeng Powder Metallurgy, is a dedicated manufacturer of tungsten heavy alloy plate. We are now capable of machining tungsten heavy alloy plates with a range of thickness from 3 mm to 300mm or more. Tungsten heavy alloy plate contains tungsten content ranging from 90%-97% with small amounts of nickel, iron or copper elements. After the mixing, pressing and sintering process, Tungsten is alloyed with other metals beginning as a form of powders. 16.85-18.75g/cm3 density of tungsten heavy alloy is the most important industrial property. 

Below is the counterweight block used on ships:
The selection of high density tungsten alloy for ballast weight is due to the high density of tungsten alloy products. Compared with other metals, the density of tungsten alloy materials is much higher than that of other metals, such as steel and lead materials. The counterweight blocks used on ships are used to provide resistance to lateral forces during navigation for sailboats, maintaining the stability of the ship with a larger weight. If the weight is not enough, the ship is prone to capsizing, especially in strong winds at sea, causing the ship to lose stability and fall into danger. When the cargo carried by the sailing vessel reaches a specific port, the cargo will be unloaded.

Technical parameters

Tungsten heavy alloy	WNiFe (ASTM B777, AMS-T-21014)				WNiCu (ASTM B777, AMS-T-21014)
Designation	90W	93W	95W	97W	90%W	93%W	95%w
Density g/cm3)	16.85~17.30	17.15~17.85	17.75~18.35	18.25~18.85	16.85~17.30	17.50~17.70	17.75~18.35
Tensile Strength (MPa)	758Min	758Min	724Min	689Min	648Min	648Min	684Min
Elongation (%)	5Min	5Min	3Min	2Min	2Min	2Min	1Min
Hardness (HRC)	32Max	33Max	34Max	35Max	32Max	33Max	34Max
Yield strength(MPa)	517Min	517Min	517Min	517Min	517Min	517Min	634Min

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