GGG-40.3 (EN 0.7043) Ductile Cast Iron Casting Material
Ductile Cast Iron
Introduction
GGG-40.3 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-40.3 (EN 0.7043) |
| 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-40.3 | — |
| DIN 1693-2 | Cast Iron with Nodular Graphite — Unalloyed and Low Alloy Grades — Properties in Cast-on Test Piece | 1977-10 | GGG-40.3 | — |
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 2 — Normative
DIN 1693-2 — 1977-10 · Table 1 — Normative
| Property | Cast-on test piece |
|---|---|
| Tensile Strength | ≥ 390 N/mm2[4] ≥ 370 N/mm2[5] |
| Yield Strength (Rp0.2) | ≥ 250 N/mm2[4] ≥ 240 N/mm2[5] |
| Elongation | ≥ 15 %[4] ≥ 12 %[5] |
- 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.
Additional Mechanical Properties
Low-Temperature Properties
DIN 1693-1 — 1973-10 · Table 2 — Normative
Notes
DIN 1693-1 · Edition 1973-10
[1] Tensile Strength/Yield Strength (Rp0.2)/Elongation: Separately cast U or Y test piece; tensile specimen per DIN 50125; A5 elongation
[2] Impact Energy (DVM): DVM notched-bar impact specimen per DIN 50115; room temperature; no numeric temperature invented; Condition: Separately cast test piece; DVM specimens; not a Charpy V-notch conversion. Mean of 3 DVM specimens; DIN 1693-1:1973-10, Table 2, PDF page 2; Mean of 3 DVM specimens
[3] Impact Energy (DVM): DVM notched-bar impact specimen per DIN 50115; room temperature; no numeric temperature invented; Condition: Separately cast test piece; DVM specimens; not a Charpy V-notch conversion. Individual DVM specimen; DIN 1693-1:1973-10, Table 2, PDF page 2; Individual DVM specimen
[6] Impact Energy (DVM): Test at -20 °C; DVM notched-bar impact specimen per DIN 50115; -20 °C; Condition: Separately cast test piece; DVM specimens; not a Charpy V-notch conversion. Mean of 3 DVM specimens; DIN 1693-1:1973-10, Table 2, PDF page 2; Mean of 3 DVM specimens
[7] Impact Energy (DVM): Test at -20 °C; DVM notched-bar impact specimen per DIN 50115; -20 °C; Condition: Separately cast test piece; DVM specimens; not a Charpy V-notch conversion. Individual DVM specimen; DIN 1693-1:1973-10, Table 2, PDF page 2; Individual DVM specimen
DIN 1693-2 · Edition 1977-10
[4] Tensile Strength/Yield Strength (Rp0.2)/Elongation: wall thickness ≤ 60 mm; Cast-on test piece 40 mm; DIN 50125 B14x70 tensile specimen; A5 elongation
[5] Tensile Strength/Yield Strength (Rp0.2)/Elongation: wall thickness ≤ 200 mm; Cast-on test piece 70 mm; DIN 50125 B14x70 tensile specimen; A5 elongation
[8] Impact Energy (DVM): wall thickness ≤ 60 mm; Test at -20 °C; DVM impact specimen per DIN 50115; Condition: Cast-on test piece; 30 ≤ t ≤ 60 mm; DVM impact energy at -20 °C; other temperatures require agreement.; DIN 1693-2:1977-10, Table 1, PDF page 7; Mean of 3 DVM specimens
[9] Impact Energy (DVM): wall thickness ≤ 60 mm; Test at -20 °C; DVM impact specimen per DIN 50115; Condition: Cast-on test piece; 30 ≤ t ≤ 60 mm; DVM impact energy at -20 °C; other temperatures require agreement.; DIN 1693-2:1977-10, Table 1, PDF page 7; Individual DVM specimen
[10] Impact Energy (DVM): wall thickness ≤ 200 mm; Test at -20 °C; DVM impact specimen per DIN 50115; Condition: Cast-on test piece; 60 < t ≤ 200 mm; DVM impact energy at -20 °C; other temperatures require agreement.; DIN 1693-2:1977-10, Table 1, PDF page 7; Mean of 3 DVM specimens
[11] Impact Energy (DVM): wall thickness ≤ 200 mm; Test at -20 °C; DVM impact specimen per DIN 50115; Condition: Cast-on test piece; 60 < t ≤ 200 mm; DVM impact energy at -20 °C; other temperatures require agreement.; DIN 1693-2:1977-10, Table 1, PDF page 7; Individual DVM specimen
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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