Alliage lourd de tungstène

Tungsten Heavy Alloy Specifications

Material Name	HM-17C	HM-17F	HM-175	HM-18C	HM-18F	HM-185
Matériau	90% W 6% Ni 4% Cu	90% W 7% Ni 3% Fe	92.5% W 5.25% Ni 2.25% Fe	95% W 3.5% Ni 1.5% Cu	95% W 3.5% Ni 1.5% Fe	97% W 2.1% Ni 0.9% Fe
Density, grams/cubic centimeter	17 gm/cc	17 gm/cc	17.5 gm/cc	18 gm/cc	18 gm/cc	18.5 gm/cc
Density, lbs/in³	0.614	0.614	0.632	0.65	0.65	0.668
Mil. Spec T-21014D	Class 1	Class 1	Class 2	Class 3	Class 3	Class 4
ASTM-B777	Première année	Première année	Niveau 2	Grade 3	Grade 3	Grade 4
Type	Type II & III	Type II & III	Type II & III	Type II & III	Type II & III	Type II & III
AMS 7725E	Class 1 Type 1	Class 1 Type 2	Class 2 Type 2	Class 3 Type 1	Class 3 Type 2	Class 4 Type 2
Other Material Names	HA170C, HD 17, Dens21, CMW 1000, K1701, M1000	HA170, HD 17D, HD17BB, SD170, CMW 3000, K1700, M3000	HA175, HD 17.5, SD175, K1750	HA180C, HD 18, Dens25, CMW 2000, K1801, M2000	HA180, HD 18D, SD180, CMW 3950, K1800, M3950	HA185, HD 18.5, SD185, CMW 3970, K1850

Tungsten Heavy Alloy Properties

Material Name	HM-17C	HM-17F	HM-175	HM-18C	HM-18F	HM-185
Hardness, Rockwell C	24	25	26	27	27	28
Ultimate Tensile Strength; PSI	≥94,000	≥110,000	≥110,000	≥94,000	≥105,000	≥110,000
Yield Strength, .2% Offset; PSI	≥75,000	≥75,000	≥75,000	≥75,000	≥75,000	≥75,000
Elongation. % in 1″	≥2	≥5	≥5	≥2	≥3	≥2
Proportional Elastic Limit; PSI	45,000	52,000	46,000	45,000	44,000	45,000
Modulus of Elasticity; PSI	40 x 10E6	45 x 10E6	47 x 10E6 2	45 x 10E6	50 x 10E6	53 x 10E6
Coefficient of Thermal Expansion x 10E-6/C (20C-400C)	5.4	4.8	4.6	4.4	4.6	4.5
Thermal Conductivity; CGS Units	0.23	0.18	0.2	0.33	0.26	0.3
Electrical Conductivity; %IACS	14	10	13	16	13	17
Magnetic Properties	NIL	Slightly Magnetic	Slightly Magnetic	NIL	Slightly Magnetic	Slightly Magnetic

Tungsten Heavy Alloy Features

• High density: ~ 18.8 g/cm³
• High strength: tensile strength of 700-1000Mpa
• Shielding ray ability: In the same thickness conditions, tungsten alloy ray shielding ability is more than 1.7 times that of lead. When the ray is stronger, the difference between the two shielding ray abilities is more and more obvious.
• Large thermal conductivity: The thermal conductivity of tungsten alloy is 5 times that of mold steel.
• Small coefficient of thermal expansion: 4 ~ 6 × 10^-6 / ℃, only iron or steel 1/2-1/3
• Good plasticity, workability, and weldability
• Compared with the toxicity of lead, tungsten alloy material has environmentally friendly characteristics. The use of tungsten alloy shielding parts in the manufacture of radiation detectors does not jeopardize human safety.
• Compared with tungsten-nickel-copper alloy, tungsten-nickel-iron alloy has a certain ferromagnetism, and its mechanical properties and processing performance are better than tungsten-nickel-copper alloy.

Tungsten Heavy Alloy Production Process

• Mixing: The tungsten powder is mixed with other metals in the desired proportions.
• Pressing: The mixed powder is pressed into the desired preliminary shape, such as cylinders, blocks, etc.
• Frittage: The pressed parts are sintered at high temperatures, forming a dense solid material.
• Recuit: The sintered products undergo an annealing process to remove internal stresses and improve toughness and ductility.
• Machining: Precision machining processes, such as turning, milling, and grinding, are applied to the sintered parts to achieve final dimensions and shapes.
• Traitement thermique: The alloy undergoes additional heat treatment to optimize properties such as hardness, strength, or other physical characteristics.
• Traitement de surface: If required, surface treatments (such as coating, passivation, etc.) are applied to enhance corrosion resistance, hardness, or other properties.

Tungsten Heavy Alloy Machining Service

HM dispose de centres d'usinage avancés dotés de divers équipements de traitement de haute précision, ce qui lui permet d'offrir de multiples services d'usinage tels que le tournage, le fraisage, le meulage et le perçage. Qu'il s'agisse d'une production à grande échelle ou de commandes personnalisées en petites séries, nous garantissons une précision et des performances élevées pour répondre aux exigences spécifiques des clients. Les méthodes suivantes sont utilisées pendant le traitement :

• Pressage isostatique
• Forgeage
• Extrusion
• Moulage
• Moulage par injection
• Roulant
• Usinage par décharge électrique (EDM)
• Fraisage
• Tournage

Tungsten Heavy Alloy Applications

• Aérospatiale: Tungsten Heavy Alloy is commonly used to manufacture counterweights for aircraft and spacecraft.
• Automobile: Tungsten Heavy Alloy can be used to manufacture crankshaft balancing blocks and chassis counterweights to reduce vibration and noise.
• Medical Equipment: Tungsten Heavy Alloy is commonly used in medical radioactive shielding materials, such as protective canisters and shielding syringes.
• Military: Tungsten Heavy Alloy can manufacture armor-piercing bullets and other high-density ammunition.
• Sports Equipment: Tungsten Heavy Alloy is also often used as counterweights for golf clubs, tennis rackets, and skis to improve balance and maneuverability.

Tungsten Heavy Alloy Packaging

The Tungsten Heavy Alloy is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.