Klas if i Kasi Material
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Klasifikasi Material
Myrna AriatiWahyuaji Narottama Putra
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Klasifikasi Material
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Ferrous Alloys
Cast Iron
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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
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Komposisi Besi TuangUtama : 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
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Komposisi Besi Tuang
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Sifat Mekanik Besi TuangUTS (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
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Klasifikasi Besi Tuang Kelabu
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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
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Klasifikasi Besi Tuang Nodular
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Klasifikasi Austempered Ductile Iron
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Ferrous Alloys
Carbon Steel
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Klasifikasi Baja
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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
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Klasifikasi Baja Paduan
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Klasifikasi Baja Paduan
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Klasifikasi Baja Paduan
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Ferrous Alloys
Stainless Steel
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Family of Stainless Steel
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Properties of Stainless SteelAlloy 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 DuctilityHigh
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
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Austenitic SS
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Ferritic SS
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Martensitic SS
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Duplex SS
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Ferrous Alloys
Tool Steel
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Klasifikasi Tool Steel
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Klasifikasi Tool Steel
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Tipe Tool Steel
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Tipe Tool Steel
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Non Ferrous
Aluminium Alloys
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Klasifikasi Aluminium Alloys
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Klasifikasi Aluminium Alloys
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Klasifikasi Aluminium Alloys
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Klasifikasi Aluminium Alloys
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Klasifikasi Aluminium Alloys
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Perlakuan Panas Aluminium
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Perlakuan Panas Aluminium
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Perlakuan Panas Aluminium
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Perlakuan Panas Aluminium
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Non Ferrous
Magnesium Alloys
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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
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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
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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
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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
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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.
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Contoh Magnesium Alloys
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Contoh Sifat Magnesium Alloys
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Unified Number System (UNS)
Metals & Alloys
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Unified Number System