T15 粉末

Overview of T15 Powder

T15 粉末是一种碳化钨-钴硬质合金粉末，具有优异的硬度、强度和韧性。它含有高比例的碳化钨和作为粘结相的 15% 钴。

Key properties and advantages of T15 powder:

T15 Powder Properties and Characteristics

属性	详细信息
组成	85% WC with 15% Co binder
密度	13.0-14.5 g/cc
粒子形状	Rounded, multi-faceted
尺寸范围	0.5-15 microns
硬度	88-93 HRA when sintered
横向断裂强度	550-650 MPa

The ultrahard tungsten carbide particles held together in a cobalt matrix make T15 ideal for the most extreme wear and abrasion conditions across industrial, mining, and construction sectors.

T15 Powder Composition

Typical composition of T15 cemented carbide powder:

T15 Powder Composition

组件	重量 %
Tungsten carbide (WC)	84-86%
钴（Co）	14-16%
碳 (C)	0.8% max
氧气 (O)	0.5% 最大值
铁（Fe）	最大 0.3%
镍 (Ni)	最大 0.3%

• Tungsten carbide provides extreme hardness and wear resistance
• Cobalt acts as tough and ductile binder holding WC particles together
• Carbon and oxygen present as impurities
• Trace iron, nickel from raw materials

The optimized WC-Co ratio provides the best combination of hardness, fracture toughness and impact strength needed in wearing applications.

T15 Powder Physical Properties

T15 Powder Physical Properties

物业	价值观
密度	13.0-14.5 g/cc
熔点	2870°C (WC) and 1495°C (Co)
导热性	60-100 W/mK
电阻率	25-35 μΩ-cm
热膨胀系数	4.5-6.0 x 10^-6 /K
最高服务温度	500°C in air

• Very high density enables use in compact, miniaturized components
• Very low CTE reduces thermal stresses and distortion
• Can withstand continuous service up to 500°C
• Good thermal conductivity reduces temperature gradients

These properties make T15 suited for severe abrasion and repeated impact force conditions experienced in mining, drilling, and construction environments.

T15 Powder Mechanical Properties

T15 Powder Mechanical Properties

物业	价值观
硬度	88-93 HRA
横向断裂强度	550-650 MPa
抗压强度	5500-6200 MPa
断裂韧性	10-12 MPa.m^1/2
杨氏模量	550-650 GPa
冲击强度	350-900 kJ/m2

• Extreme hardness provides wear and abrasion resistance
• Very high compressive strength withstands crushing forces
• Reasonable fracture toughness and impact strength
• Hardness and strength determined by WC particle size and distribution

This exceptional combination of hardness, strength and toughness makes T15 suitable for the most severe impaction, abrasion and gouging wear conditions.

T15 Powder Applications

Typical applications of T15 tungsten carbide-cobalt powder include:

T15 Powder Applications

行业	用途举例
Mining	Rock drill bits, grit blasting nozzles
建筑	Demolition tools, rock crushers
制造业	Forming dies, metal drawing parts
石油和天然气	Stabilizers, downhole motors
一般情况	Cutting and machining tools

一些具体的产品用途：

• Percussive rock drilling bits, mine boring tools
• Highly abrasive slurry pump parts like shafts, impellers
• Extrusion dies for brick and ceramic manufacturing
• Wear-resistant components in sandblasting equipment
• Cutting blades, knives, saw teeth needing extreme hardness

T15’s unparalleled hardness and wear performance make it the top choice for equipment used in the most severe impaction-abrasion conditions across industrial sectors.

T15 Powder Specifications

Key specifications for T15 cemented carbide powder:

T15 Powder Standards

标准	说明
ISO 513	Classification and application of cemented carbides
ASTM B276	Cobalt-tungsten carbide powders and hard metals
JIS G 4053	Sintered hard metals
GB/T 4661-2006	Chinese standard for cemented carbides

这些定义

• Chemical composition – Co and WC content
• Carbide grain size and powder particle size distribution
• 所需的机械性能
• Acceptable impurities
• Approved production methods like carburization and reduction-diffusion

Meeting these specifications ensures optimal combination of hardness, strength and toughness for maximum wear performance.

T15 Powder Particle Sizes

T15 Powder Particle Size Distribution

颗粒大小	特点
0.5-2 microns	Ultrafine grade provides superfinish
0.5-5 microns	Submicron range enhances toughness
3-15 microns	Most commonly used size for optimal properties

• Finer powders increase hardness and finish
• Coarser powders improve fracture strength and impact resistance
• Particle size distribution is optimized based on service conditions
• Both crushed and sintered carbide powders used

Controlling particle size distribution and morphology optimizes final component properties and performance.

T15 Powder Production Method

T15 Powder Production

方法	详细信息
Carburization and reduction-diffusion	Produces fine spherical powders
Crushing sintered material	Lower cost, irregular angular particles
铣削	Ball milling used for particle size reduction
Spray drying	Granulation and spheroidization process
Degassing	Removes gaseous impurities

• Spherical powder morphology provides high packing density
• Crushed powders have lower production cost
• Milling, spray drying used for particle size control
• Degassing optimizes powder purity and sintered microstructure

Automated, high volume production processes result in consistent feedstock optimized for part performance.

T15 Powder Pricing

T15 Powder Pricing

系数	对价格的影响
粉末级	高纯度等级的成本更高
颗粒大小	超细粉更贵
订购数量	数量越大，价格越低
生产方法	Complex methods increase cost
包装	Special bags or cans increase cost

指示性定价

• T15 spherical powder: $45-60 per kg
• T15 crushed powder: $35-45 per kg
• Large volume pricing can be 20-30% lower

Pricing depends on powder characteristics, production method, order size, packaging and lead time.

T15 Powder Suppliers

T15 Powder Suppliers

公司名称	地点
山特维克	瑞典
Kennametal	美国
H.C. Starck	德国
京东方新材料	中国
Zhuzhou Cemented Carbide Group	中国
Toshiba Materials	日本

Selection factors:

• Powder grades and particle morphologies
• 生产能力和交付周期
• 技术专长和客户服务
• Sampling, testing and quality control procedures
• Pricing levels and payment terms
• Compliance with international material standards

T15 Powder Handling and Storage

T15 Powder Handling

建议	原因
使用个人防护设备和通风设备	Prevent exposure to fine particles
避免火源	Powder can combust if overheated in air
遵循安全协议	减少健康和火灾隐患
Use inert atmosphere	Prevent oxidation during powder processing
储存密封容器	Prevent contamination or absorption

存储建议

• Store in stable containers and ambient temperatures
• Limit exposure to moisture, acids, chlorine
• Avoid cross-contamination from other powders

Proper precautions preserve powder purity and prevent safety issues during handling and storage.

T15 Powder Inspection and Testing

T15 Powder Testing

测试	详细信息
化学分析	Verifies composition using ICP, EDX, or XRF
粒径分布	Laser diffraction or sedimentation analysis
粉末形态	颗粒形状的扫描电镜成像
表观密度	按照 ASTM B212 标准测量
水龙头密度	机械敲击后测量的密度
霍尔流量	Determines powder flowability

Testing ensures powder meets required chemical composition, particle characteristics, morphology, density specifications, and flowability per relevant standards.

T15 Powder Pros and Cons

Advantages of T15 Powder

• Exceptional hardness, wear resistance, and strength
• Withstands high compression without fracturing
• Good fracture toughness and impact resistance
• Dimensional stability under heavy loads
• Resists deformation at elevated temperatures
• Enables smaller, lighter components

Limitations of T15 Powder

• 烧结后难以加工
• Not suitable for dynamic bearing applications
• Relatively brittle behavior
• Oxidation at high temperatures without resistance coatings
• Higher raw material costs than steel powders
• Requires specialized experience for optimal use

Comparison With Tungsten Carbide-Titanium Carbide-Tantalum Carbide

T15 vs WC-TiC-TaC

参数	T15	WC-TiC-TaC
硬度	88-93 HRA	92-96 HRA
断裂韧性	10-12 MPa.m^1/2	8-9 MPa.m^1/2
实力	非常高	Extremely high
费用	中度	非常高
耐腐蚀性	公平	优秀
应用	General wear parts	Extreme abrasion and corrosion

• WC-TiC-TaC has slightly higher hardness and strength
• T15 provides significantly better fracture toughness
• WC-TiC-TaC offers excellent corrosion resistance
• T15 is more cost effective
• WC-TiC-TaC for more critical, expensive applications

T15 Powder FAQs

Q: What are the main applications of T15 tungsten carbide cobalt powder?

A: Main applications include mining tools like drill bits, rock crushers, and dredging equipment; construction tools like demolition and pulverizing equipment; dies, drawing parts, extrusion tooling; abrasion resistant components; and general cutting and machining tools.

Q: Why is cobalt used as the binder in tungsten carbide grades?

A: Cobalt provides good corrosion resistance, high strength and toughness, and facilitates liquid phase sintering of the tungsten carbide particles during densification to achieve full density and optimal properties.

Q: What heat treatment is used for T15 tungsten carbide cobalt parts?

A: T15 does not require post-sintering heat treatment. The liquid phase sintering process allows achieving full density and the desired properties during powder consolidation itself.

Q: How is T15 tungsten carbide cobalt powder produced?

A: Main production methods include carburization and reduction-diffusion to make spherical powders or crushing and milling sintered tungsten carbide material into irregular particles. These powders are then blended with cobalt powder in the desired ratio.