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Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.
EN-GJS-700-2 (material number EN-JS1070 / former DIN GGG-70) is a high-duty, fully pearlitic European ductile iron. Standardized in EN 1563 with a minimum tensile strength of 700 MPa, minimum 0.2% proof strength of 420 MPa, and minimum elongation of 2.0% (for thickness ≤30 mm), it exhibits exceptional wear resistance, high surface fatigue strength, and high stiffness. Extensively specified across Europe for heavy gear wheels, transmission shafts, and industrial crushing components.
Source-backed commercial trade name and short designations cataloged in canonical data.
Standard Designations & Applicable Specifications — Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| ENPRIMARY | EN-GJS-700-2 | European Standard | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| W-Nr | EN-JS1070 | Werkstoffnummer | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| DIN | GGG-70 | Deutsches Institut für Normung | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| ISO | 1083/JS/700-2 | International Organization for Standardization | —Ref: Standard Specifications for Gray and Ductile Cast Iron (ASTM A48/A48M, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1) |
| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| GGG-70 | Historical Alias | Colloquial or commercial industry synonym |
| EN-JS1070 | Commercial Alias | Colloquial or commercial industry synonym |
| Pearlitic SG Iron 700-2 | Colloquial Alias | Colloquial or commercial industry synonym |
| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| CEN | EN 1563 | Founding — Spheroidal graphite cast irons | Specification Reference |
| ISO | ISO 1083 | Spheroidal graphite cast irons — Classification | Specification Reference |
Chemical Composition (Weight %) — Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).
| Element | Symbol | Atomic No. | Semantic Basis | Specified Value | Unit | Metallurgical Notes & Qualification | Data Status |
|---|---|---|---|---|---|---|---|
| Carbon | C | 0 | RANGE | 3.40 – 3.75 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Silicon | Si | 0 | RANGE | 2.00 – 2.50 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Manganese | Mn | 0 | RANGE | 0.50 – 0.90 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Phosphorus | P | 0 | MAXIMUM | ≤ 0.05 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Sulfur | S | 0 | MAXIMUM | ≤ 0.02 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Magnesium | Mg | 0 | RANGE | 0.04 – 0.06 | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Copper | Cu | 0 | RANGE | 0.40 – 0.80 | wt% | Pearlite stabilizer.Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
| Iron | Fe | 0 | REMAINDER | Remainder | wt% | Ref: ASTM International, CEN, ISO & ASM International Standards Technical Committees | VERIFIED |
Source-specific physical properties. Test temperatures are shown only where reported.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Density | 7.15 g/cm³ | TYPICAL | 7.15 g/cm³ | ASTM International, CEN & ISO Technical Committees | VERIFIED |
Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Thermal Conductivity | 30 W/(m·K) | TYPICAL | 30 W/(m·K) | ASTM International, CEN & ISO Technical Committees | VERIFIED | |
| Specific Heat Capacity | 490 J/(kg·K) | TYPICAL | 490 J/(kg·K) | ASTM International, CEN & ISO Technical Committees | VERIFIED | |
| Coefficient of Thermal Expansion | 11.2 µm/(m·K) | TYPICAL | 11.2 µm/(m·K) | ASTM International, CEN & ISO Technical Committees | VERIFIED |
Electrical conductivity and resistivity in their reported units and conditions.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Electrical Resistivity | 600 nΩ·m | TYPICAL | 600 nΩ·m | ASTM International, CEN & ISO Technical Committees | VERIFIED |
Contextual Mechanical Properties & Tempers: Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Standard Product Form | PearliticSource values and qualifiersUltimate Tensile Strength: ≥ 700 MPa (MINIMUM)Governing minimum tensile strength per EN 1563 for wall thickness <= 30 mm.ASTM International, CEN, ISO & ASM International Standards Technical Committees — ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1 0.2% Proof Strength: ≥ 420 MPa (MINIMUM)Governing minimum 0.2% proof stress (Rp0.2) per EN 1563.ASTM International, CEN, ISO & ASM International Standards Technical Committees — ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1 Elongation at Break (Lo = 5d): ≥ 2 % (MINIMUM)Minimum elongation per EN 1563 is 2.0%.ASTM International, CEN, ISO & ASM International Standards Technical Committees — ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, ASM Handbook Vol 1 | — · <= 30 mm wall thickness | ≥ 700 MPa | ≥ 420 MPa | ≥ 2 % | — | — | — | VERIFIED |
| Standard Product Form | PearliticSource values and qualifiers | — | — | — | — | — | — | — | VERIFIED |
| Standard Product Form | PearliticSource values and qualifiers | — | — | — | — | — | — | 225–305 HBW | VERIFIED |
Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.
Moderate to difficult machinability (~55% of C36000 baseline). Fully pearlitic matrix and high hardness (225–305 HBW) require coated carbide tooling and rigid setups.
Extremely difficult to weld. High risk of martensite formation in the HAZ; welding is generally prohibited on stressed components.
Normalized at 880°C–920°C followed by controlled air cooling to ensure a fully pearlitic matrix. Can be surface hardened by induction or flame to 55–60 HRC.
Non-deformable.
Comparable Grades & Cross-References: Carefully classified cross-reference relationships for EN-GJS-700-2 Ductile Cast Iron. Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| ASTM A536 Grade 100-70-03 Ductile Cast Iron | Cast Iron | Approximate Equivalent | EN-GJS-700-2 (min 700 MPa UTS, 420 MPa YS, 2% elongation) is the European counterpart to ASTM A536 100-70-03 (min 689 MPa UTS, 483 MPa YS, 3% elongation), sharing fully pearlitic microstructures.Engineering substitution review required. Design calculations must verify temper, formability, and corrosion limits before specifying as a direct replacement. | VERIFIED | Side-by-Side Compare → |
Contextual technical guides explaining degradation mechanisms, testing methodologies, and selection criteria relevant to EN-GJS-700-2 Ductile Cast Iron.
Cast iron is an indispensable alloy family renowned for superior vibration damping and castability, but its iron matrix and carbon microstructure make it susceptible to atmospheric rust. Restoring rusted cast iron requires understanding how mechanical and chemical methods interact with the underlying metal.
Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.
Authoritative foundry data harmonized across ASTM A48, ASTM A536, EN 1561, EN 1563, ISO 185, ISO 1083, SAE J431, SAE J434, and ASM International Handbook Volume 1 (Properties and Selection: Irons, Steels, and High-Performance Alloys).