Um guia abrangente para o pó H13

Overview of H13 Powder

H13 is a versatile chromium-molybdenum-vanadium hot work tool steel exhibiting very good resistance to thermal fatigue cracking and wear resistance. It has high hardness retention at elevated temperatures making it suitable for tools and dies used for hot forming, forging and casting applications.

Key characteristics of H13 powder include:

• Excellent hot hardness and thermal fatigue resistance
• Boa resistência ao desgaste e tenacidade
• High hardenability for increasing hardness through heat treatment
• Excellent machinability in annealed state
• Can be polished to fine surface finish
• Available in various size ranges and morphologies

H13 powder is used to produce hot work tooling needed across several industries including automotive, aerospace, mining, die-casting etc. This article provides a detailed overview of H13 powder.

Chemical Composition of H13 Powder

The typical chemical composition of H13 powder is:

Elemento	% do Peso
Ferro (Fe)	Equilíbrio
Cromo (Cr)	4.75-5.5%
Molibdênio (Mo)	1.1-1.75%
Vanádio (V)	0.8-1.2%
Manganês (Mn)	0.2-0.6%
Silício (Si)	0.8-1.2%
Carbono (C)	0.32-0.45%

The key alloying elements like chromium, molybdenum and vanadium provide excellent heat resistance through formation of stable carbides.

Properties of H13 Powder

H13 powder possesses the following properties:

Propriedade	Valor
Densidade	7.3 g/cm3
Ponto de Fusão	1420-1460¡«C
Condutividade térmica	24 W/mK
Resistividade elétrica	0.55 Ã×´Î.cm
Módulo de Young	200 GPa
Razão de Poisson	0.29-0.30
Resistência à Tração	1900 MPa
Limite de escoamento	1650 MPa
alongamento	8-9%
Dureza	46-52 HRC

 

H13 maintains its hardness, strength and thermal fatigue resistance up to 600¡«C making it an ideal choice for hot work tool and die applications.

Production Method for H13 Powder

The common production methods for H13 powder include:

• Atomização a gás?- High pressure inert gas used to atomize molten H13 alloy resulting in fine spherical powders with controlled size distribution.
• Atomização da Água?- High velocity water jet impacts and disintegrates molten metal stream into fine irregular powders. Lower cost but higher oxygen pickup.
• Ligação Mecânica?- Ball milling of iron and alloying element powders followed by sintering and secondary atomization.

Gas atomization provides the best control over particle characteristics like size, shape and microcleanliness.

Applications of H13 Powder

Typical applications of H13 powder include:

• Manufatura aditiva?- Used in laser powder bed fusion and binder jetting to produce hot work tooling inserts, dies, blow molds etc.
• Revestimentos por Projeção Térmica?- Applied using wire/powder arc spray methods to provide wear and heat resistant coatings.
• Modelagem por Injeção de Metais?- To manufacture small, complex hot work parts with tight tolerances like forging dies.
• Metalurgia do pó?- Press and sinter process to produce hot forming tools and dies cost effectively.
• Filler de Solda?- Used as flux cored wire providing excellent resistance to heat and wear in the welded component.

Specifications of H13 Powder

H13 powder is available in various size ranges, shapes and grades including:

• Tamanho da partícula:?From 10-45 microns for AM methods, up to 150 microns for thermal spray processes.
• Morfologia:Formas de partículas esféricas, irregulares e misturadas. O pó esférico liso proporciona um fluxo ideal.
• Notas:?Conforming to AISI, DIN, ASTM, and other equivalent standards. Custom alloys also available.
• Pureza:?Oxygen content from 100-2000 ppm depending on production method. Lower oxygen levels offer better performance.

Global Suppliers of H13 Powder

Some of the major suppliers of H13 powder include:

• Sandvik Osprey (Reino Unido)
• Erasteel (França)
• HC Stark (Germany)
• Dura-Bar Metal Services (USA)
• Tekna Advanced Materials (Canada)
• CNPC Powder Group (China)

These companies produce H13 powder using various atomization techniques and customized alloys tailored for specific hot work tool and die applications across industries.

Pricing of H13 Powder

Pricing of H13 powder depends on several factors:

• Graus de pureza
• Particle size and morphology
• Método de Produção a Pó
• Volume do pedido
• Processamento adicional
• Fornecedor e localização geográfica

Nota	Faixa de preço
Comercial	$15-25 por kg
Alta Pureza	$25 - 50 por kg.
Ultrafina	$50-120 por kg
Qualidade Especial	US$ 120-250 o Kg

 

Gas atomized and high purity grades command much higher pricing than commercial H13 powder. Smaller quantities are also costlier.

Storage and Handling of H13 Powder

H13 powder requires the following controlled storage and handling:

• Store in sealed containers under humidity control to prevent oxidation
• Avoid fine powder accumulation to minimize dust explosion hazards
• Use proper grounding and PPE when handling powder
• Prevent contact with sparks, flames or ignition sources
• Follow recommended safety practices from supplier SDS

Inert gas glove box techniques are preferred for handling reactive alloy powders like H13.

Inspection and Testing of H13 Powder

Key quality control tests for H13 powder:

• Chemical analysis using OES or XRF to ensure correct composition
• Distribuição do tamanho de partículas conforme a norma ASTM B822
• Análise morfológica por meio de imagens MEV
• Taxa de fluxo de pó medida de acordo com a norma ASTM B213
• Determinação de densidade por picnometria de hélio
• Teste de impureza por ICP-MS
• Caracterização da microestrutura por difração de raios X

Thorough testing ensures uniform chemistry, physical characteristics and microstructure suitable for application requirements.

Comparison Between H13 and D2 Tool Steel Powders

H13 and D2 are two tool steel powders compared:

Parâmetro	H13	D2
Tipo	Hot work steel	Cold work steel
Teor de Cr	4.75-5.5%	11-13%
V content	0.8-1.2%	0.7-1.2%
Resistência ao calor	Excelente	Bom
Resistência ao desgaste	Muito bom	Excelente
Tenacidade	Maior	Mais baixo
Custo	Mais baixo	Maior

 

H13 resists heat and thermal fatigue cracking whereas D2 offers very high wear resistance. H13 provides better toughness and lower cost.

H13 Powder FAQs

Q: How is H13 tool steel powder produced?

A: H13 powder is commercially produced using gas atomization, water atomization and mechanical alloying followed by sintering. Gas atomization offers the best control of powder characteristics.

Q: What are the main applications of H13 powder?

A: The major applications of H13 powder include additive manufacturing, thermal spray coatings, metal injection molding, and powder metallurgy hot work tooling requiring excellent heat and wear resistance.

Q: What is the recommended H13 powder size for binder jetting AM?

A: For binder jetting process, the typical H13 powder size range is 20-45 microns with spherical morphology to enable good powder packing and binder infiltration.

Q: Does H13 powder require any special handling precautions?

A: Yes, it is recommended to handle H13 powder carefully under controlled humidity and inert atmosphere using proper grounding, ventilation and PPE.

Q: Where can I purchase H13 powder suitable for hot forging dies?

A: For hot work die applications, high purity H13 powder can be purchased from leading manufacturers including Sandvik Osprey, Erasteel, HC Stark, and Dura-Bar Metal Services.