Ductile Iron, also known as spheroidal or nodular iron, is described as cast iron with the graphite substantially spheroidal in sharp and essentially free of other forms of graphite. Ductile iron is most popular metal material. www.castingquality.com
Reference Casting Standards:
ASTM A536: Standard Specification for Ductile Iron Castings
Ductile Iron castings can be produced in Casting Quality Industrial:
- Sand Casting
- Shell Casting
- Lost Form Casting
- Centrifugal casting
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- Sand Casting
Casting Quality focus on Metal Parts industry, we provide professional service in Metal Casting field.
Sand Casting is a popular metal form method, are suitable for all materiel, such as grey iron, ductile iron, malleable iron, carbon steel, stainless steel, aluminum and bronze.
- Investment Casting
also named as precision lost wax casting, mainly suitalbe for carbon steel and stainless steel parts. We also provide grey iron and ductile iron and aluminum and bronze parts by investment casting. It can achieve the best appearance with good tolerance
- Shell Casting
Shell casting method is a good option to replace investment casting and sand casting. the quality is better than sand casting parts, suitable for bulk production.
- CNC Machining
CNC Milling, CNC turning with 5 xix CNC center, we provide precision machining for all castings based on customers design drawings.
- CAD Design
Mechanical Design service based on customers requirement, our software is Solidworks and AutoCAD.
- Tools/Mold Design
Mould design and production will be served for metal casting ad plastic injection industry. Based on our more than 10 years experience, we supply professional molds for our customers in Europe and North American.
Ductile iron standard grades in ASTM A536: www.castingquality.com
| Casting Grade | Tensile Strength, min | Yield Strength, min | Elongation in 2in or 50mm, %, min | ||
| psi, | Mpa | psi | Mpa | ||
| A536 Gr 60-40-18 | 60 000 | 414 | 40 000 | 276 | 18 |
| A536 Gr 65-45-12 | 65 000 | 448 | 45 000 | 310 | 12 |
| A536 Gr 80-55-06 | 80 000 | 552 | 55 000 | 379 | 6.0 |
| A536 Gr 100-70-03 | 100 000 | 689 | 70 000 | 483 | 3.0 |
| A536 Gr 120-90-02 | 120 000 | 827 | 90 000 | 621 | 2.0 |
Ductile iron standard grades for Special Applications in ASTM A536:
| Casting Grade | Tensile Strength, min | Yield Strength, min | Elongation in 2in or 50mm, %, min | ||
| psi, | Mpa | psi | Mpa | ||
| A536 Gr 60-42-10 | 60 000 | 415 | 42 000 | 290 | 10 |
| A536 Gr 70-50-05 | 70 000 | 485 | 50 000 | 345 | 5 |
| A536 Gr 80-60-03 | 80 000 | 555 | 60 000 | 415 | 3 |
ASTM A536 Ductile Iron Heat treatment requirement: www.castingquality.com
Generally ductile iron, that is hat treated by quenching to martensite and tempering, may have substantially lower fatigue strength than as cast material of the same hardness. The grade 60-40-18 will normally require a full ferritizing anneal. The 120-90-02 and the 100-70-03 grades generally require a quenching and temper or a normalize and temper, or an isothermal heat treatment. The other two grades can be met either as-cast or by heat treatment. Pls contact with Casting Quality for more details.
ASTM A536 Ductile Iron Typical Casting Application
Machinery, valve, truck, railway, gearbox, flywheels etc.
No any requirement about chemistry in ASTM A536 Standards, but we will suggest the chemistry as our experience in Casting industry: www.castingquality.com
| ASTM A536 | Chinese Grade | C | Si | Mn | P ≤ | S≤ | Mg | RE | Others |
| 60-40-18 | QT400-18 | 3.6-3,8 | 2.3-2.7 | 0.5 | 0.08 | 0.025 | 0.03-0.05 | 0.02-0.03 | – |
| 60-42-10 | QT400-15 | 3.5-3.6 | 3.0-3.2 | 0.5 | 0.07 | 0.02 | 0.04 | 0.02 | – |
| 65-45-12 | QT450-10 | 3.4-3.9 | 2.7-3.0 | 0.2-0.5 | 0.07 | 0.03 | 0.06-0.10 | 0.03-0.10 | – |
| 70-50-05 | QT500-7 | 3.6-3.8 | 2.5-2.9 | 0.6 | 0.08 | 0.025 | 0.03-0.05 | 0.03-0.05 | – |
| 80-60-03 | QT600-3 | 3.6-3.5 | 2.0-2.4 | 0.5-0.7 | 0.08 | 0.025 | 0.035-0.05 | 0.025-0.045 | – |
| 100-700-03 | QT700-2 | 3.7-4.0 | 2.3-2.6 | 0.5-0.8 | 0.08 | 0.02 | 0.035-0.065 | 0.035-0.065 |
Mo 0.15-0.4 Cu 0.4-0.8 |
| 120-90-02 | QT900-2 | 3.5-3.7 | 2.7-3.0 | 0.5 | 0.08 | 0.025 | 0.03-0.05 | 0.025-0.045 | Mo 0.15-0.25 Cu 0.5-0.7 |
Similar Ductile Iron Casting Grades: www.castingquality.com
| Index | Country | Ductile Iron Grade | |||||||
| 1 | China | QT400-15 | QT400-18 | QT450-10 | QT500-7 | QT600-3 | QT700-2 | QT800-2 | QT900-2 |
| 2 | Japanese | FCD400 | — | FCD450 | FCD500 | FCD600 | FCD700 | FCD800 | — |
| 3 | USA | 60-42-10 | 60-40-18 | 65-45-12 | 70-50-05 | 80-60-03 | 100-70-03 | – | 120-90-02 |
| 4 | Russia | BЧ40 | — | BЧ45 | BЧ50 | BЧ60 | BЧ70 | BЧ80 | BЧ100 |
| 5 | Germany | GGG40 | — | — | GGG50 | GGG60 | GGG70 | GGG80 | — |
| 6 | Italy | GS370-17 | GS400-12 | GS500-7 | GS600-2 | GS700-2 | GS800-2 | — | |
| 7 | France | FGS400-15 | FGS400-18 | FGS450-10 | FGS500-7 | FGS600-3 | FGS700-2 | FGS800-2 | FGS900-2 |
| 8 | England | 400/18 | 450/10 | 500/7 | 600/3 | 700/2 | 800/2 | 900/2 | |
| 9 | Poland | ZS3817 | ZS4012 | ZS4505/5002 | ZS6002 | ZS7002 | ZS8002 | ZS9002 | |
| 10 | India | SG370/17 | SG400/12 | SG500/7 | SG600/3 | SG700/2 | SG800/2 | — | |
| 11 | Romania | — | — | — | — | FGN70-3 | — | — | |
| 12 | Spanish | FGE38-17 | FGE42-12 | FGE50-7 | FGE60-2 | FGE70-2 | FGE80-2 | — | |
| 13 | Belgium | FNG38-17 | FNG42-12 | FNG50-7 | FNG60-2 | FNG70-2 | FNG80-2 | — | |
| 14 | Australia | 300-17 | 400-12 | 500-7 | 600-3 | 700-2 | 800-2 | — | |
| 15 | Sweden | 0717-02 | — | 0727-02 | 0732-03 | 0737-01 | 0864-03 | — | |
| 16 | Hungary | GǒV38 | GǒV40 | GǒV50 | GǒV60 | GǒV70 | — | — | |
| 17 | Bulgaria | 400-12 | 380-17 | 450-5 | 500-2 | 600-2 | 700-2 | 800-2 | 900-2 |
| 18 | ISO | 400-15 | 400-18 | 450-10 | 500-7 | 600-3 | 700-2 | 800-2 | 900-2 |
| 19 | COPANT | — | FMNP45007 | FMNP55005 | FMNP65003 | FMNP70002 | — | — | |
| 20 | Finland | GRP400 | — | GRP500 | GRP600 | GRP700 | GRP800 | — | |
| 21 | Holland | GN38 | GN42 | GN50 | GN60 | GN70 | — | — | |
| 22 | Luxemburg | FNG38-17 | FNG42-12 | FNG50-7 | FNG60-2 | FNG70-2 | FNG80-2 | — | |
| 23 | Austria | SG38 | SG42 | SG50 | SG60 | SG70 | — | — | |
| 24 | Europa-Norm | En-GJS-400-15 | En-GJS-400-18 | En-GJS-450-10 | En-GJS-500-7 | En-GJS-600-3 | En-GJS-700-2 | En-GJS-800-2 | En-GJS-900-2 |
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How do you heat treat to bring the BHN higher
oil or water quench can get a high hardness at surface.