CI
Ductile & gray iron
Regular material families for suitable housings, hubs, and supports. Specify ductile or grey iron, grade, standard, mechanical properties, and delivery condition.
Material Selection
Select metal grades around load, wear, corrosion, and total cost.
Carbon steel, ductile iron, and grey iron are our regular material families. We confirm the exact grade, condition, casting route, and required documents against your drawing. Stainless steel, alloy steel, and other special materials need separate feasibility confirmation.
Drawing-based reviewLow-to-mid volumeExport support
Capability pageClear technical scope, practical production route, and RFQ-ready evidence.
Application first
Choose the grade for the service condition—not by habit.Load · impact · wear · temperature · corrosion · weldabilityCast ironDuctile & gray iron
Carbon steelGeneral structural use
Alloy steelStrength & wear
Stainless steelCorrosion resistance
Material families
Regular materials and grades requiring separate confirmation.
The final grade should match the drawing, service condition, casting route, heat treatment or surface finish, and required inspection documents. For other materials, the production route and verification requirements are assessed before quotation.
CS
Carbon steel castings
A regular material family for suitable drawing-based cast components. Define the cast grade and its governing standard rather than relying on a general steel description.
AS
Alloy steel
Part-specific confirmation is required. Send the grade, heat treatment, properties, section thickness, and test requirements before selecting this route.
SS
Stainless steel casting review
Part-specific confirmation is required. Include the exact cast grade, service environment, delivery condition, and required qualification documents.
AL
Aluminum alloys
Outside the regular steel-and-iron casting range shown here. Send the drawing for a separate route assessment; availability is not implied by this material category.
BR
Bronze & copper alloys
Outside the regular steel-and-iron casting range shown here. Any quotation requires confirmation of the alloy, production route, and supplier responsibilities.
Material specification
Give the complete material designation.
Similar grade names are not an automatic approval for substitution. The RFQ needs the standard, product form, heat-treatment condition, and acceptance requirements.
Grade and standard
Copy the exact designation and standard revision from the drawing. State whether the requirement is for a casting, forging, or wrought material.
Delivery condition
Include heat treatment, hardness range, test location, and any mechanical-property requirements.
Inspection documents
Specify the requested certificate or report type, including EN 10204 3.1 if required. The issuer, covered results, and traceability are confirmed with the quotation.
Substitution approval
If an alternative grade is proposed, confirm it with the buyer before production. Similar names or cross-reference tables do not replace that approval.
Technical evidence before production
Selection logic
Define the duty cycle before comparing grades.
Material selection is strongest when the engineering inputs describe how the part fails, not only what grade was used previously.
✓Static, cyclic, shock, or impact loading
✓Wear mode: abrasion, galling, erosion, or sliding
✓Outdoor, marine, chemical, or high-temperature exposure
✓Required hardness, toughness, and fatigue life
✓Welding, machining, and heat-treatment constraints
✓Target cost, annual demand, and replacement interval
Practical workflow
A clear route from service conditions to a production material.
1
Describe the application
Load, motion, exposure, temperature, wear, and failure history.
2
Shortlist material families
Balance properties, casting behavior, machining, sourcing, and cost.
3
Confirm grade & treatment
Confirm the specified grade and condition. Any proposed substitution needs buyer approval against the applicable standard.
4
Verify production evidence
Review certificates, hardness, mechanical tests, or other required records.
Deliverables & controls
Material definition that purchasing and production can use.
Document the technical basis so purchasing, production, inspection, and shipment use the same requirements.
Grade and accepted equivalents
Document the primary grade and whether equivalent regional standards are allowed.
Heat-treatment condition
Normalize, anneal, quench and temper, solution treat, or other specified condition.
Hardness and test location
Define target range, conversion limits, sampling, and measurement location.
Certificate requirements
Clarify chemistry, mechanical properties, heat number traceability, and third-party testing needs.
Frequently asked questions
Questions buyers ask before release.
Use these answers as a starting point. Final acceptance criteria should be tied to the drawing, purchase order, and approved technical record.
Can you recommend an equivalent Chinese material grade?
We can propose practical equivalents for review, but the customer should approve the final material definition and acceptance criteria.
Do all parts need material certificates?
No. Certificate scope depends on risk, industry, drawing requirements, and buyer expectations. It should be defined before quotation.
Can heat treatment be included?
Yes. Heat treatment can be included when the required condition, hardness, distortion controls, and inspection are clearly specified.
How do you handle uncertain legacy materials?
Samples may be evaluated through chemistry, hardness, microstructure, and application evidence before a replacement grade is proposed.
Ready for review
Send your part requirements for a practical quotation path.
Share drawings, models, samples, quantities, material requirements, finish, inspection scope, and target delivery. We will review the evidence and identify the next technical step.