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klasifikasi material cast iron.ppt
- 1. Klasifikasi Material Myrna Ariati Wahyuaji Narottama Putra
- 4. 1. White Cast Iron 2. Grey Cast Iron (FC) 3. Mallable Cast Iron 4. Ductile Cast Iron (FCD) 5. Austempered Ductile Iron (ADI) Matrix: Ferritic, pearlitic, austenitic, martensitic, bainitic (austempered). Tipe Besi Tuang
- 5. Komposisi Besi Tuang Utama : Fe (besi) Paduan : C (karbon) = 2.75 – 4.00% Si (silikon) = 0.75 – 3.00% Mn (mangan) = 0.25 – 1.50% P (posfor) = 0.02 – 0.75% S (sulfur) = 0.02 – 0.2% Carbon Equivelent : CE (%) = C (%) + 0,33 (Si + P) % Komposisi Besi Tuang
- 7. Sifat Mekanik Besi Tuang UTS (Kg/mm2) Elongasi (%) Grey Cast Iron(FC) 10 – 35 < 1 Mallable Cast Iron 40 – 47 15 – 20 Nodular Cast Iron (FCD) 45 – 55 3 – 20 Austempered Ductile Iron (ADI) > 100 4 – 7 Vermicular (Compacted Graphite) Cast Iron 30 - 40 2 - 5
- 8. Klasifikasi Besi Tuang Kelabu
- 9. Klasifikasi Besi Tuang Kelabu Class Symbol UTS (kg/mm2) Hardness (HB) Class 1 FC 10 10 min 201 max Class 2 FC 15 15 min 212 max Class 3 FC 20 20 min 223 max Class 4 FC 25 25 min 241 max Class 5 FC 30 30 min 262 max Class 6 FC 35 35 min 277 max
- 10. Klasifikasi Besi Tuang Nodular
- 11. Klasifikasi Austempered Ductile Iron
- 13. Klasifikasi Baja
- 14. A = alloy, basic open hearth B = carbon, acid Bessemer C = carbon, basic open hearth D = carbon, acid open hearth E = electric furnace Contoh: AISI C1050 adalah baja karbon, basic-open hearth steel dg 0.50 % karbon Huruf lain adalah H- Hardenability Contoh; 4340H Klasifikasi Baja Paduan
- 19. Family of Stainless Steel
- 20. Properties of Stainless Steel Alloy Group Magnetic Response1 Work Hardening Rate Corrosion Resistance2 Hardenable Austenitic Generally No Very High High By Cold Work Duplex Yes Medium Very High No Ferritic Yes Medium Medium No Martensitic Yes Medium Medium Quench & Temper Precipitation Hardening Yes Medium Medium Age Harden Alloy Group Ductility High Temperature Resistance Low Temperature Resistance3 Weldability Austenitic Very High Very High Very High Very High Duplex Medium Low Medium High Ferritic Medium High Low Low Martensitic Low Low Low Low Precipitation Hardening Medium Low Low High
- 21. Austenitic SS
- 22. Ferritic SS
- 23. Martensitic SS
- 24. Duplex SS
- 28. Tipe Tool Steel
- 29. Tipe Tool Steel
- 41. Klasifikasi Paduan Magnesium AZ91C-T6 2 huruf Elemen paduan utama A = aluminium Z = zinc 2 angka Jumlah paduan utama 9 = 9% Al 1 = 1% Zn Klasifikasi Temper -T6 = solution treatmen dan pemanasan aging 1 huruf Paduan lain C = Paduan ketiga
- 42. Kode-kode penandaan ASTM A - Aluminium E - Rare earths H - Thorium K - Zirconium M - Manganese Q - Silver T - Tin Z - Zinc F - As fabricated O - Annealed H10 and H11 - slightly strain hard H23, H24, H26 - strain hardened and partially annealed T4 - artificially aged T6 - Solution treat, aged T8 - Solution treat, cold work, aged
- 43. Contoh Magnesium Alloys AZ91C-T6: 9Al-0.7Zn-0.13Mn Kekuatan menengah (91 MPa yield, 275 MPa tensile), keuletan baik K1A: 1Zr Kapasitas redam tinggi QH21A: 2.5Ag-1Th-0.7Zr Komponen pesawat udara untuk hingga 250˚C 207 MPa yield, 275 MPa tensile
- 44. Contoh Magnesium Alloys AZ91B-F Paduan untuk proses die casting AM60A-F Roda automotive, ketangguhan baik, kekuatan baik. AS41A-F Ketahanan creep baik hingga 175˚C
- 45. Contoh Magnesium Alloys AZ31B-F Batang ekstrusi dan dibentuk untuk komponen baterai, sifat mekanis menengah jika digunakan untuk struktur. HK31A-H24 Sheet and plate , yield stress 205 MPa dan UTS 260 MPa, mampu las amat baik.
- 47. Contoh Sifat Magnesium Alloys
- 48. Unified Number System (UNS) Metals & Alloys