GGG-40 (EN 0.7040) Ductile Cast Iron Casting Material
Ductile Cast Iron
Introduction
GGG-40 is a ductile cast iron grade covered by DIN 1693-1, DIN 1693-2. Typical family applications include gear and transmission components, hubs, brackets, machine housings and pump-related castings.
| Field | Value |
|---|---|
| Designation | GGG-40 (EN 0.7040) |
| Material Type | Cast Iron |
| Sub Type | Ductile Cast Iron |
| Product Form | casting |
Manufacturing Process
Sand Casting
Shell Molding Casting
Lost Foam Casting
Equivalent Materials
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| DIN 1693-1 | Cast Iron with Nodular Graphite — Unalloyed and Low Alloy Grades | 1973-10 | GGG-40 | — |
| DIN 1693-2 | Cast Iron with Nodular Graphite — Unalloyed and Low Alloy Grades — Properties in Cast-on Test Piece | 1977-10 | GGG-40 | — |
Related Casting Products
Physical Properties
| Property | Value / Unit | Note | Source |
|---|---|---|---|
| Density | 7.2 kg/dm³ | Approximate density for weight calculations, not a guaranteed density limit | DIN 1693-1 |
Chemical Composition
DIN 1693-1–1973-10
No specified chemical composition limits in DIN 1693-1
DIN 1693-2–1977-10
N/A
Heat Treatment
DIN 1693-1–1973-10
Supplied as cast or heat-treated; no mandatory numerical heat-treatment cycle specified.
DIN 1693-2–1977-10
N/A
Mechanical Properties
Core Mechanical Properties
DIN 1693-1 — 1973-10 · Table 1 — Normative
| Property | Separately cast test piece |
|---|---|
| Tensile Strength | ≥ 400 N/mm2 |
| Yield Strength (Rp0.2) | ≥ 250 N/mm2 |
| Elongation | ≥ 15 % |
- Separately cast U or Y test piece; tensile specimen per DIN 50125; A5 elongation
Conditions are not identical. Compare each stated condition and applicability separately.
DIN 1693-2 — 1977-10 · Table 1 — Normative
| Property | Cast-on test piece |
|---|---|
| Tensile Strength | ≥ 390 N/mm2[1] ≥ 370 N/mm2[2] |
| Yield Strength (Rp0.2) | ≥ 250 N/mm2[1] ≥ 240 N/mm2[2] |
| Elongation | ≥ 15 %[1] ≥ 12 %[2] |
- DIN 50125 B14x70 tensile specimen; A5 elongation; Primarily casting weights >2000 kg and/or sections 50–200 mm; other sizes need separate agreement. Table 1 specifically lists 30–60 and >60–200 mm.
DIN 1693-2 — 1977-10 · Table 3 — Informative
| Property | Informative casting-location design guidance |
|---|---|
| Yield Strength (Rp0.2) | ≥ 250 N/mm2[3] ≥ 240 N/mm2[4] ≥ 230 N/mm2[5] ≥ 230 N/mm2[6] |
- Casting location, not separately cast or cast-on specimen; Guidance for design only; not guaranteed casting minima. At junctions use largest inscribable cylinder diameter rather than nominal wall thickness; approximately 95% probability of being exceeded.; Informative reference value; not an acceptance requirement
Notes
DIN 1693-2 · Edition 1977-10
[1] Tensile Strength/Yield Strength (Rp0.2)/Elongation: wall thickness ≤ 60 mm; Cast-on test piece 40 mm
[2] Tensile Strength/Yield Strength (Rp0.2)/Elongation: wall thickness ≤ 200 mm; Cast-on test piece 70 mm
[3] Yield Strength (Rp0.2): wall thickness ≤ 50 mm
[4] Yield Strength (Rp0.2): wall thickness ≤ 80 mm
[5] Yield Strength (Rp0.2): wall thickness ≤ 120 mm
[6] Yield Strength (Rp0.2): wall thickness ≤ 200 mm
Welding Conditions
N/A
Applications
Typical cast components in this material family include gear and transmission components, hubs, brackets, machine housings and pump-related castings. Applications include agricultural, construction and general industrial machinery. Lifting, low-temperature and pressure-retaining duties require the relevant component-specific requirements; ordinary family uses do not establish those capabilities.
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