S2 Bubuk

Overview of S2 Powder

Serbuk S2 adalah serbuk baja perkakas berkecepatan tinggi yang ideal untuk membuat perkakas potong yang membutuhkan kekerasan, kekuatan, dan ketahanan aus yang tinggi pada suhu tinggi. Serbuk ini mengandung tungsten, molibdenum, vanadium, dan paduan tambahan yang memberikan kekerasan panas yang sangat baik dan ketahanan terhadap kelelahan termal.

Key properties and advantages of S2 powder:

S2 Powder Properties and Characteristics

Properti	Detail
Komposisi	Fe-1C-5Cr-2.35Mo-6.4W-1.4V-2Si alloy
Kepadatan	7,7 g/cc
Bentuk partikel	Tidak teratur, bersudut
Kisaran ukuran	10-150 mikron
Kepadatan yang tampak	Kepadatan sebenarnya hingga 50%
Kemampuan mengalir	Rendah hingga sedang
Kekerasan	62-64 HRC when heat treated
Ketangguhan	Sangat bagus

S2 powder produces cutting tools, dies, and machine components with extended service life under continuous high temperature and intermittent shock loading conditions.

S2 Powder Composition

Typical composition of S2 high speed steel powder:

S2 Powder Composition

Elemen	Berat %
Besi (Fe)	Keseimbangan
Karbon (C)	0.9-1.2%
Kromium (Cr)	3.8-4.5%
Tungsten (W)	6.4%
Molibdenum (Mo)	1.9-2.2%
Vanadium (V)	1.3-1.6%
Mangan (Mn)	0.2-0.5%
Silikon (Si)	0.9-1.4%

• Besi menyediakan matriks feritik
• Carbon, tungsten, and chromium form hard carbides
• Vanadium and molybdenum enhance wear resistance
• Manganese and silicon facilitate machining

The composition is optimized to achieve an exceptional combination of hot hardness, red hardness, and toughness necessary for high speed machining applications.

S2 Powder Physical Properties

S2 Powder Physical Properties

Properti	Nilai-nilai
Kepadatan	7,7 g/cc
Titik leleh	1320-1350°C
Konduktivitas termal	37 W/mK
Resistivitas listrik	0.6 μΩ-m
Suhu layanan maksimum	600°C
Suhu Curie	770°C

• High density enables miniaturized components
• Retains hardness and strength at elevated temperatures
• Menjadi paramagnetik di atas titik Curie
• Can withstand prolonged service up to 600°C
• Good thermal conductivity reduces thermal expansion stresses

These properties provide a balanced combination of hot hardness and thermal shock resistance required in high speed machining applications.

S2 Powder Mechanical Properties

S2 Powder Mechanical Properties

Properti	Nilai-nilai
Kekerasan	62-64 HRC
Kekuatan pecah melintang	4500-4800 MPa
Kekuatan tekan	3800-4100 MPa
Kekuatan tarik	2050-2250 MPa
Kekuatan luluh	1930-2050 MPa
Perpanjangan	8-10%
Ketangguhan benturan	10-14 J/cm2

• Kekerasan yang luar biasa saat diberi perlakuan panas
• High strength with reasonable ductility
• Very good compressive and transverse rupture strength
• Excellent red hardness at elevated temperatures
• Strength depends on heat treatment process

S2 powder produces cutting tools and dies with hardness, strength, and thermal properties needed to machine challenging materials at high speeds and temperatures.

S2 Powder Applications

Typical applications of S2 high speed steel powder include:

S2 Powder Applications

Industri	Contoh Penggunaan
Otomotif	Cutting and milling tools
Dirgantara	Drills, end mills
Manufaktur	Punches, forming dies
Minyak dan gas	Downhole tools, drill bits
General machining	Turning, boring, and planing tools

Beberapa penggunaan produk tertentu:

• Cutting inserts, indexable tooling
• Broaches, reamers, taps, threading dies
• Metal slitting saws and industrial knives
• Extrusion tooling and drawing dies
• Cold heading and forging dies
• Gauges, wear-resistant components

S2’s unique properties make it the top choice for reliable cutting tools and components used in demanding metalworking applications.

S2 Powder Specifications

Key specifications for S2 high speed steel powder:

S2 Powder Standards

Standar	Deskripsi
ASTM A600	Specification for tool steels high speed steel
JIS G4403	High speed tool steels
DIN 1.2363	Equivalent to AISI S7 high speed steel
UNS T11302	Designation for AISI S2 grade
ISO 4957	Tool steels specification

Ini menentukan:

• Chemical composition limits of S2
• Sifat mekanis yang diperlukan dalam kondisi perlakuan panas
• Metode produksi yang disetujui seperti atomisasi gas
• Protokol pengujian kepatuhan
• Persyaratan jaminan kualitas
• Proper packaging and identification

Powder produced to these standards ensures suitability for high wear resistance tooling applications under thermal fatigue conditions.

S2 Powder Particle Sizes

S2 Powder Particle Size Distribution

Ukuran Partikel	Karakteristik
10-22 mikron	Tingkat ultrafine memberikan kepadatan tertinggi
22-53 mikron	Kisaran ukuran yang paling umum digunakan
53-105 mikron	Ukuran yang lebih kasar memberikan kemampuan mengalir yang baik

• Partikel yang lebih halus memungkinkan densifikasi yang lebih besar selama sintering
• Partikel yang lebih kasar meningkatkan aliran serbuk ke dalam rongga cetakan
• Ukuran dipilih berdasarkan properti bagian akhir yang dibutuhkan
• Partikel yang dikabutkan baik gas maupun air digunakan

Mengontrol distribusi ukuran mengoptimalkan perilaku pengepresan, densitas sinter, dan performa komponen akhir.

S2 Powder Apparent Density

S2 Powder Apparent Density

Kepadatan Nyata	Detail
Kepadatan sebenarnya hingga 50%	Untuk morfologi serbuk yang tidak beraturan
4.0-5.0 g/cc	Higher for spherical, lower for irregular powder

• Bentuk bubuk bulat memberikan kepadatan nyata yang tinggi
• Irregular powder has lower density around 45-50%
• Higher apparent density improves die filling and part quality
• Allows complex tool geometry compaction

Higher apparent density leads to better component production rate and performance.

S2 Powder Production Method

S2 Powder Production

Metode	Detail
Atomisasi gas	Gas inert bertekanan tinggi memecah aliran paduan cair menjadi tetesan-tetesan halus
Peleburan induksi vakum	Bahan masukan dengan kemurnian tinggi yang dilelehkan di bawah vakum
Beberapa peleburan ulang	Meningkatkan homogenitas kimiawi
Pengayakan	Mengklasifikasikan bubuk ke dalam fraksi ukuran partikel yang berbeda

• Atomisasi gas memberikan bentuk bubuk bulat
• Peleburan vakum menghilangkan kotoran gas
• Beberapa peleburan ulang meningkatkan keseragaman
• Pasca-pemrosesan memungkinkan penyesuaian ukuran partikel

Fully automated processes combined with strict quality control ensures reliable and consistent S2 powder properties critical for tooling performance.

S2 Powder Pricing

S2 Powder Pricing

Faktor	Dampak pada Harga
Tingkat kemurnian	Tingkat kemurnian yang lebih tinggi lebih mahal
Ukuran partikel	Bubuk ultrafine lebih mahal
Jumlah pesanan	Harga menurun dengan volume yang lebih besar
Layanan tambahan	Kustomisasi menambah biaya

Harga Indikatif

• S2 spherical powder: $18-22 per kg
• S2 irregular powder: $12-16 per kg
• Large volume pricing up to 30% lower

Pricing depends on purity, particle characteristics, order quantity, and any additional customization requirements.

S2 Powder Suppliers

S2 Powder Suppliers

Perusahaan	Lokasi
Höganäs	Swedia
Produk Bubuk Tukang Kayu	AMERIKA SERIKAT
Erasteel	Amerika Serikat, Eropa
Crucible Industries	AMERIKA SERIKAT
voxco	Jerman
Jingdong New Materials	Cina

Faktor-faktor pemilihan pemasok utama:

• Nilai bubuk yang ditawarkan
• Kapasitas produksi
• Particle characteristics and consistency
• Testing capability and quality control
• Pricing and lead times
• Technical customer service

S2 Powder Handling and Storage

S2 Powder Handling

Rekomendasi	Alasan
Pastikan ventilasi yang tepat	Mencegah paparan terhadap partikel logam halus
Gunakan APD yang sesuai	Avoid ingestion through nose/mouth
Peralatan darat	Prevent static sparking
Hindari sumber penyalaan	Bahaya debu yang mudah terbakar
Gunakan alat yang tidak menimbulkan percikan api	Mencegah kemungkinan penyalaan
Ikuti protokol yang aman	Reduce fire, explosion, health risks

Rekomendasi Penyimpanan

• Store sealed containers away from moisture or contamination
• Maintain storage temperatures below 27°C
• Limit exposure to oxidizing acids and chlorine compounds

Proper precautions during handling and storage help preserve purity and prevent safety hazards.

S2 Powder Inspection and Testing

S2 Powder Testing

Tes	Detail
Analisis kimia	Verifies composition using optical/ICP spectroscopy
Analisis ukuran partikel	Determines size distribution using laser diffraction or sieving
Kepadatan yang tampak	Measured as per ASTM B212 using Hall flowmeter
Morfologi bubuk	Pencitraan SEM untuk menentukan bentuk partikel
Flow rate test	Laju aliran gravitasi melalui corong yang ditentukan
Uji kerapatan keran	Kepadatan diukur setelah sampel bubuk disadap secara mekanis

Pengujian memastikan serbuk memenuhi komposisi kimia, karakteristik fisik, distribusi ukuran partikel, morfologi, densitas, dan spesifikasi laju alir yang diperlukan.

S2 Powder Pros and Cons

Advantages of S2 Powder

• Exceptional hot hardness and red hardness
• High strength and wear resistance at elevated temperatures
• Good toughness and thermal shock resistance
• Resists softening and shape changes up to 600°C
• Dimensional stability under thermal cycling
• Cost-effective compared to exotic PM tool steel grades

Limitations of S2 Powder

• Ketahanan korosi sedang tanpa perawatan permukaan
• Limited cold formability and shear strength
• Membutuhkan perlakuan panas yang cermat oleh penyedia yang berpengalaman
• Tidak dapat dilas menggunakan pengelasan fusi konvensional
• Large cross-sections can experience embrittlement
• Contains expensive alloying elements

Comparison With H13 Tool Steel Powder

S2 vs H13 Tool Steel Powder

Parameter	S2	H13
Kekerasan	62-64 HRC	54-57 HRC
Hot hardness	Luar biasa	Bagus.
Ketangguhan	Sangat bagus	Bagus.
Tahan guncangan termal	Luar biasa	Sedang
Kekuatan dingin	Bagus.	Luar biasa
Biaya	Tinggi	Rendah

• S2 has much greater hot hardness and thermal shock resistance
• H13 provides better cold strength and toughness
• S2 is more expensive due to higher alloy content
• S2 preferred for high speed machining applications
• H13 suited for cold and warm pressing tooling

S2 Powder FAQs

Q: What are the main applications of S2 tool steel powder?

A: Main applications include cutting tools like drills, mills, inserts, taps, dies, saws, planing tools, as well as extrusion tooling, forging dies, gauges, and components needing hot hardness and thermal shock resistance.

Q: What heat treatment is used for S2 tool steel powder?

A: S2 tool steel is typically heat treated by austenitizing between 1150-1200°C followed by air, oil, or polymer quenching, then tempering between 540-650°C to achieve hardness between 62-64 HRC.

Q: How does tungsten improve the properties of S2 steel?

A: Tungsten forms hard tungsten-iron-carbon complexes that provide exceptional hot hardness, strength and wear resistance at elevated temperatures needed for high speed machining applications.

Q: What safety precautions should be used when working with S2 powder?

A: Proper ventilation, protective gear, inert atmosphere, grounding, avoiding ignition sources, using non-sparking tools, and safe storage away from contamination or moisture.