SG Iron Casting
Manufacturer & Exporter
Delivering high-tensile spheroidal graphite (SG) iron casting solutions with controlled nodularity and precision CNC machining for critical engineering applications.
Metallurgical Specs
- Nodularity: >85% Verified
- Tensile Strength: Up to 800 MPa
- Elongation: Up to 18%
- Standards: EN 1563 / ASTM A536
Engineered Spheroidal Graphite Iron
Spheroidal Graphite (SG) Iron, also known as ductile iron, contains graphite in the form of spherical nodules rather than flakes. This microstructural difference, achieved through precise magnesium inoculation in our induction furnaces, prevents crack propagation and provides exceptional ductility, tensile strength, and impact resistance.
At Asian Technocast LLP, our metallurgical engineers monitor chemical composition using advanced optical emission spectrometers. This ensures precise control over carbon equivalent (CE), silicon, and magnesium levels to guarantee consistent grade compliance across all casting heats.
Microstructure Control
Optimized pearlite-ferrite matrix ratio for specific mechanical properties.
Zero-Defect QA
100% ultrasonic testing to verify internal soundness and eliminate shrinkage.
Common SG Iron Grades & Mechanical Properties
| Standard Grade | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| EN-GJS-400-15 | 400 MPa | 250 MPa | 15% |
| EN-GJS-500-7 | 500 MPa | 320 MPa | 7% |
| EN-GJS-600-3 | 600 MPa | 370 MPa | 3% |
| ASTM 65-45-12 | 448 MPa | 310 MPa | 12% |
| ASTM 80-55-06 | 552 MPa | 379 MPa | 6% |
SG Iron Casting Questions Answered
We regularly cast a wide range of SG iron grades including EN-GJS-400-15, EN-GJS-500-7, EN-GJS-600-3, and ASTM A536 grades such as 65-45-12, 80-55-06, and 100-70-03. Custom metallurgical chemistries can be formulated to meet specific OEM requirements.
Our automated foundry has an annual production capacity exceeding 20,000 tons. This scale allows us to comfortably support high-volume OEM supply contracts while maintaining consistent quality.
We perform ultrasonic testing and microstructural analysis on every batch. Our laboratory verifies that nodularity exceeds 85% and that nodule count is optimized for superior tensile strength and ductility.
Yes, we have an in-house CNC machining division equipped with advanced vertical machining centers (VMCs) and horizontal machining centers (HMCs) to deliver ready-to-assemble finished components.
Our spheroidal graphite castings are widely used in high-stress applications including pump and valve bodies, automotive powertrains, hydraulics, earthmoving machinery, and agricultural equipment.
Ready to Discuss Your
Casting Requirement?
Submit your drawings, CAD files, or technical specifications. Our engineering team reviews parting lines, gating flow paths, and metallurgical tolerances to return a comprehensive manufacturing proposal.
CAD & Drawing Review
Gating simulation feedback included with all technical proposals.
Material Grade Consultation
Expert support selecting optimal Gray or Spheroidal S.G. Iron grades.
Fast Technical Response
Full engineering-backed quotes delivered within 48 hours.