Superior Corrosion Resistance
Resists corrosion in many atmospheric, chemical, and industrial environments.
STAINLESS STEEL CASTINGS
Stainless Steel Castings
Precision Engineered.
Corrosion Resistant. Built to Perform.
Bhanu Special Castings offers stainless steel casting solutions engineered for corrosion resistance, mechanical strength, dimensional accuracy, and dependable industrial performance. Our stainless steel components support demanding requirements across chemical processing, pumps and valves, power generation, marine equipment, and general engineering applications.
WHY STAINLESS STEEL CASTINGS?
Understanding
Stainless Steel Castings
Stainless steel castings are manufactured from iron-based alloys containing at least approximately 10.5% chromium. The chromium forms a thin, protective oxide film on the surface, which helps resist corrosion in suitable operating environments.
Unlike conventional carbon steel, stainless steel provides enhanced resistance to oxidation, atmospheric corrosion, and many chemical environments. Depending on the selected grade, stainless steel castings also offer excellent toughness, strength, wear resistance, and performance under varying temperatures.
These castings are widely used in critical industrial applications where material integrity, complex component geometry, and dependable service performance are essential.
KEY ADVANTAGES
Key Advantages of Stainless Steel Castings
Excellent Mechanical Strength
Provides reliable structural integrity and mechanical performance.
Temperature Resistance
Specialized grades support high-temperature and low-temperature applications.
Extended Service Life
Helps reduce component deterioration, maintenance, and replacement frequency.
Design Flexibility
Supports complex shapes, customized geometries, and precision-engineered components.
Surface Finish & Cleanability
Suitable for applications requiring smooth, cleanable surfaces after appropriate finishing.
THE STAINLESS STEEL ADVANTAGE
The Corrosion
Resistance Advantage
Advanced Protection Through
Chromium-Rich Passivation
The defining advantage of stainless steel lies in its ability to develop a thin, adherent, chromium-rich oxide layer on the metal surface. This passive layer acts as a protective barrier between the material and its surrounding environment.
When exposed to suitable oxygen-containing conditions, the protective film can reform after minor surface damage, supporting long-term corrosion resistance.
The addition of alloying elements such as nickel, molybdenum, and nitrogen further enhances the properties of selected stainless steel grades.
HOW STAINLESS STEEL RESISTS CORROSION
01
Chromium Protection
Chromium creates the protective passive oxide film.
02
Nickel Stabilization
Nickel promotes austenitic structure and improves toughness in selected grades.
03
Molybdenum Enhancement
Molybdenum improves resistance to pitting in many chloride-containing environments.
04
Grade-Specific Performance
Alloy composition and heat treatment are selected to suit corrosion, temperature, and loading conditions.
MAJOR BENEFITS
Enhanced Corrosion Resistance
In atmospheric and industrial environments.
Improved Performance
In selected chemical-processing environments.
Good Strength and Toughness
In appropriately selected grades.
High-Temperature Oxidation Resistance
In suitable stainless steel alloys.
Long-Term Reliability
With proper material selection and maintenance.
Improved Pitting Resistance
In molybdenum-bearing grades.
INTERNATIONAL STANDARDS & GRADE SPECIFICATIONS
Stainless Steel Grades Across Global Standards
International standards define stainless steel casting chemistry, mechanical properties, heat treatment, and testing requirements.
Use this table as a guide. Confirm the grade and standard edition against your corrosion, pressure, temperature, and service requirements.
Cross-Reference: International Stainless Steel Casting Standards Worldwide
| Country / Region | Applicable Standards | Representative Grades / Coverage |
|---|---|---|
| India | IS 3444:1999; IS 10774:1993; IS 11758:1994; IS 3038:2006 | CF8, CF8M, CF3, CF3M; CA15 / CA6NM type martensitic stainless; precipitation-hardening stainless grades; corrosion-resistant and investment-casting grades |
| USA | ASTM A351/A351M; ASTM A743/A743M; ASTM A744/A744M; ASTM A747/A747M; ASTM A890/A890M | CF8, CF8M, CF3, CF3M, CG8M, CH20, CA15, CA6NM, CB7Cu-1, CD4MCu, CD3MN, CE3MN, CK3MCuN |
| Germany | DIN EN 10283; legacy DIN corrosion-resistant cast steel standards | GX5CrNi19-10, GX5CrNiMo19-11-2, GX2CrNi19-11, GX2CrNiMo19-11-2, GX2CrNiMoN22-5-3 |
| Europe | EN 10283 | GX5CrNi19-10, GX5CrNiMo19-11-2, GX2CrNi19-11, GX2CrNiMo19-11-2, GX2CrNiMoN22-5-3, GX2CrNiMoCuN25-6-3-3 |
| China | GB/T 2100; GB/T high-alloy corrosion-resistant cast steel standards | ZG0Cr18Ni9, ZG0Cr18Ni10Ti, ZG0Cr17Ni12Mo2, ZG1Cr13, ZG0Cr25Ni20, duplex stainless casting grades |
| Japan | JIS G 5121 | SCS13, SCS14, SCS16, SCS1, SCS2, SCS5, SCS10, SCS11, SCS19A, SCS24 |
| United Kingdom | BS EN 10283 | Equivalent EN cast stainless grades such as GX5CrNi19-10, GX5CrNiMo19-11-2, duplex and martensitic stainless castings |
| France | NF EN 10283 | Equivalent EN austenitic, duplex, and martensitic stainless cast steel grades |
| Italy | UNI EN 10283 | Equivalent EN austenitic, duplex, and martensitic stainless cast steel grades |
| Australia | AS 2074 | H5A, H6A, CA15, CF8, CF8M, duplex corrosion-resistant cast stainless grades |
| South Korea | KS standards for cast stainless steels | CF8, CF8M, CF3M, SCS-equivalent corrosion-resistant cast grades |
| Spain | UNE EN 10283 | Equivalent EN cast stainless grades |
| Sweden | SS-EN 10283 | Equivalent EN cast stainless grades |
| Norway | NS-EN 10283 | Equivalent EN cast stainless grades |
| South Africa | SANS/EN-aligned cast stainless standards | EN-equivalent corrosion-resistant cast stainless grades for industrial service |
Grades are for general reference. Confirm grade suitability, corrosion environment, temperature, pressure, and fabrication requirements against the applicable standard and your application.
COUNTRY-WISE MATERIAL GRADES
Interactive Country-Wise Chemical Composition Tables
Select a country to explore representative stainless steel casting grades and published chemical composition values (mass %).
India — IS 3444:1999 Stainless Casting Grades
| Grade | C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % |
|---|---|---|---|---|---|---|---|---|
| Grade 1 | ≤ 0.08 | ≤ 2.00 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 8.0–11.0 | — |
| Grade 2 | ≤ 0.03 | ≤ 2.00 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 17.0–21.0 | 8.0–12.0 | — |
| Grade 3 | ≤ 0.08 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 9.0–12.0 | 2.0–3.0 |
| Grade 4 | ≤ 0.03 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 17.0–21.0 | 9.0–13.0 | 2.0–3.0 |
Selected chemistry reference only. Confirm the full composition, residual elements, heat treatment and governing standard edition against the purchase specification. Iron is the balance; a dash means no value is listed in this summary.
Reference: IS 3444:1999, Table 1
USA — ASTM A743 Stainless Casting Grades
| Grade | C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % |
|---|---|---|---|---|---|---|---|---|
| CF8 | ≤ 0.08 | ≤ 2.00 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 8.0–11.0 | — |
| CF3 | ≤ 0.03 | ≤ 2.00 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 17.0–21.0 | 8.0–12.0 | — |
| CF8M | ≤ 0.08 | ≤ 2.00 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 9.0–12.0 | 2.0–3.0 |
| CF3M | ≤ 0.03 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 17.0–21.0 | 9.0–13.0 | 2.0–3.0 |
| CA15 | ≤ 0.15 | ≤ 1.50 | ≤ 1.00 | ≤ 0.040 | ≤ 0.040 | 11.5–14.0 | ≤ 1.00 | ≤ 0.50 |
| CA6NM | ≤ 0.06 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | 11.5–14.0 | 3.5–4.5 | 0.4–1.0 |
Selected chemistry reference only. Confirm the full composition, residual elements, heat treatment and governing standard edition against the purchase specification. Iron is the balance; a dash means no value is listed in this summary.
Reference: Published foundry chemistry reference
Germany / EU — EN 10283 Stainless Casting Grades
| Grade | C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % |
|---|---|---|---|---|---|---|---|---|
| GX5CrNi19-10 (1.4308) | ≤ 0.07 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.030 | 18.0–20.0 | 8.0–11.0 | — |
| GX2CrNi19-11 (1.4309) | ≤ 0.03 | ≤ 1.50 | ≤ 2.00 | ≤ 0.035 | ≤ 0.025 | 18.0–20.0 | 9.0–12.0 | — |
| GX5CrNiMo19-11-2 (1.4408) | ≤ 0.07 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.030 | 18.0–20.0 | 9.0–12.0 | 2.0–2.5 |
| GX2CrNiMo19-11-2 (1.4409) | ≤ 0.03 | ≤ 1.50 | ≤ 2.00 | ≤ 0.035 | ≤ 0.025 | 18.0–20.0 | 9.0–12.0 | 2.0–2.5 |
Selected chemistry reference only. Confirm the full composition, residual elements, heat treatment and governing standard edition against the purchase specification. Iron is the balance; a dash means no value is listed in this summary.
Reference: EN casting grade chemistry reference
China — Published Corrosion-Resistant Pump & Valve Casting Reference
| Grade | C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % |
|---|---|---|---|---|---|---|---|---|
| ZG07Cr19Ni10 | ≤ 0.07 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.030 | 18.5–20.0 | 8.5–11.0 | — |
| ZG03Cr19Ni11 | ≤ 0.03 | ≤ 1.50 | ≤ 2.00 | ≤ 0.035 | ≤ 0.025 | 18.5–20.0 | 9.5–12.0 | — |
| ZG07Cr19Ni11Mo2 | ≤ 0.07 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.030 | 18.5–20.0 | 9.5–12.0 | 2.0–2.5 |
| ZG03Cr19Ni11Mo2 | ≤ 0.03 | ≤ 1.50 | ≤ 2.00 | ≤ 0.035 | ≤ 0.025 | 18.5–20.0 | 9.5–12.0 | 2.0–2.5 |
This tab reproduces the published Chinese pump/valve casting draft values, not a certified GB/T 2100 chemistry table. Confirm the governing GB/T standard and edition when ordering. Low-carbon grades listed also specify N ≤ 0.20%.
Reference: Chinese association pump/valve casting draft, Table 1
Japan — JIS G 5121 Stainless Casting Grades
| Grade | C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % |
|---|---|---|---|---|---|---|---|---|
| SCS13 | ≤ 0.08 | ≤ 2.00 | ≤ 2.00 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 8.0–11.0 | — |
| SCS14 | ≤ 0.08 | ≤ 2.00 | ≤ 2.00 | ≤ 0.040 | ≤ 0.040 | 17.0–20.0 | 10.0–14.0 | 2.0–3.0 |
| SCS14A | ≤ 0.08 | ≤ 1.50 | ≤ 1.50 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 9.0–12.0 | 2.0–3.0 |
| SCS21 | ≤ 0.08 | ≤ 2.00 | ≤ 2.00 | ≤ 0.040 | ≤ 0.040 | 18.0–21.0 | 9.0–12.0 | — |
SCS13, SCS14 and SCS14A have different chemistry limits; the A suffix must be retained. Sources: manufacturer grade sheets, JIS G 5121:2003 reference.
Reference: JIS casting grade manufacturer reference
OUR PRODUCT RANGE
Precision Stainless Steel
Castings for Industrial Applications
Our stainless steel casting solutions are designed for applications requiring corrosion resistance, mechanical integrity, dimensional precision, and reliable performance. We manufacture a wide range of stainless steel cast components for fluid handling, chemical processing, power generation, marine, and general engineering industries.
01
Pump Castings & Components
Designed for fluid-handling systems where corrosion resistance and hydraulic efficiency are essential.
Subproducts:Pump Impellers, Pump Casings, Volute Casings, Diffuser Bowls, Wear Rings, Pump Covers, Suction Housings, Bearing Housings.
Typical Grades:CF8, CF8M, CF3M, Duplex
02
Valve Castings & Components
Corrosion-resistant casting solutions for industrial fluid-control systems.
Subproducts:Gate Valve Bodies, Globe Valve Bodies, Check Valve Bodies, Butterfly Valve Discs, Valve Bonnets, Valve Seats, Yokes, Valve Covers.
Typical Grades:CF8, CF8M, CF3, CF3M
03
Pipe Fittings & Flow Components
Precision castings for industrial piping and fluid-distribution systems.
Subproducts:Elbows, Tees, Reducers, Flanges, Pipe Connectors, Couplings, Manifold Bodies, Customized Flow Fittings.
Typical Grades:CF8, CF8M, CF3M
04
Agitator & Mixer Components
Engineered components for industrial mixing and processing equipment.
Subproducts:Agitator Blades, Mixing Impellers, Propellers, Mixer Hubs, Shaft Couplings, Customized Mixing Components.
Typical Grades:CF8, CF8M, Duplex
05
Turbine & Power Generation Components
Specialized castings for selected hydraulic and power generation applications.
Subproducts:Turbine Runners, Guide Vanes, Nozzle Components, Diffusers, Hydraulic Housings, Turbine Parts.
Typical Grades:CA6NM, CA15
06
Custom Engineering Castings
Customized stainless steel components manufactured according to customer drawings and application requirements.
Subproducts:Machinery Housings, Structural Brackets, Bearing Supports, Mounting Components, Process Equipment Parts, Custom Cast Components.
Typical Grades:Application-specific stainless steel grades
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Step-by-Step Manufacturing Process
OUR MANUFACTURING PROCESS
From Material Selection to
Finished Stainless Steel Castings
A structured manufacturing process helps ensure appropriate alloy chemistry, dimensional accuracy, casting integrity, and quality compliance.
Technical Review & Material Selection
Review customer drawings, operating conditions, required standards, and material grades.
Pattern Development
Prepare patterns and core boxes according to component geometry and casting requirements.
Mould & Core Preparation
Prepare moulds and cores to achieve the required casting shape and dimensional accuracy.
Melting & Chemical Composition Control
Melt the selected alloy and verify chemical composition against specified requirements.
Molten Metal Pouring
Pour molten stainless steel into prepared moulds under controlled conditions.
Cooling, Shakeout & Fettling
Remove castings from moulds, clean surfaces, and remove gates and risers.
Heat Treatment
Apply appropriate solution annealing, quenching, tempering, or other specified treatment.
Machining & Surface Finishing
Perform machining, grinding, blasting, or other finishing operations as required.
Inspection & Quality Testing
Carry out specified chemical, mechanical, dimensional, and non-destructive testing.
Final Inspection & Dispatch
Complete inspection documentation and prepare accepted components for shipment.
MECHANICAL & PHYSICAL PROPERTIES
Mechanical & Physical
Properties
Mechanical Properties of Stainless Steel Castings
Mechanical properties determine the strength, ductility, and load-bearing performance of stainless steel castings under industrial operating conditions.
TYPICAL MECHANICAL PROPERTIES(As per ASTM A351)
| ASTM Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| CF8 | ≥485 | ≥205 | ≥35 |
| CF8M | ≥485 | ≥205 | ≥30 |
| CF3 | ≥485 | ≥205 | ≥35 |
| CF3M | ≥485 | ≥205 | ≥30 |
Representative ASTM A351 minimum values for selected grades and specified test conditions. Verify against the applicable standard edition and casting requirements.
GENERAL PHYSICAL PROPERTIES
| Property | Typical Value / Range |
|---|---|
| Density | 7.8–8.0 g/cm³ |
| Elastic Modulus | Approximately 190–200 GPa |
| Thermal Conductivity | Approximately 14–17 W/m·K at room temperature |
| Specific Heat Capacity | Approximately 480–520 J/kg·K |
| Magnetic Behaviour | Depends on phase balance and grade |
| Corrosion Resistance | Grade- and environment-dependent |
FACTORS AFFECTING MECHANICAL PERFORMANCE
The mechanical and physical properties of stainless steel castings can be influenced by several factors. Proper control of these factors helps achieve the desired performance and reliability.
Alloy Composition and Material Grade
The selection of alloying elements and grade (e.g., CF8, CF8M, CF3, CF3M) influences strength, corrosion resistance and high-temperature performance.
Heat-Treatment Condition
Solution annealing, aging and other heat treatments affect the final mechanical properties and microstructure.
Casting Soundness & Internal Defects
Freedom from porosity, shrinkage, cracks and inclusions is essential for achieving required strength and durability.
Section Thickness & Cooling Rate
Variation in section size and cooling rate affects grain structure, mechanical properties and residual stresses.
Operating Temperature & Service Environment
High temperatures, pressure, and aggressive environments can influence strength, corrosion resistance and component life.
Surface Condition & Finishing Process
Surface finish, machining and passivation can improve corrosion resistance and reduce the risk of surface-related failures.
Important: Stainless steel is not universally corrosion-proof. Chlorides, acids, temperature, crevices, and surface condition must be considered when selecting a grade for specific service conditions.
METALLURGICAL CHARACTERISTICS
Microstructure of
Stainless Steel Castings
Understanding Stainless Steel Microstructure
The microstructure of stainless steel castings determines their strength, toughness, corrosion resistance, hardness, and performance under different operating conditions.
Austenitic01Austenitic Microstructure
Austenitic grades such as CF8, CF8M, CF3, and CF3M typically contain an austenitic matrix, sometimes with delta ferrite.
Key Characteristics
Good toughness, ductility, weldability, and corrosion resistance.
Ferrite + Austenite02Duplex Microstructure
Duplex stainless steel contains ferrite and austenite phases, providing a combination of high strength and corrosion resistance.
Key Characteristics
High yield strength, toughness, and improved resistance to many chloride-related corrosion mechanisms.
Martensite03Martensitic Microstructure
Martensitic grades develop a predominantly martensitic structure through suitable heat treatment.
Key Characteristics
Heat-treatable strength, hardness, and mechanical performance.
Ferrite04Ferritic Microstructure
Ferritic stainless steel has a ferrite-based crystal structure and generally exhibits magnetic behaviour.
Key Characteristics
Corrosion resistance in selected environments and generally lower nickel requirements.
Microstructural Quality Control
Metallographic examination can help evaluate grain structure, phase distribution, carbide precipitation, and other microstructural characteristics that influence casting performance.
For duplex stainless steel, maintaining an appropriate ferrite-austenite phase balance and controlling harmful intermetallic phases is particularly important.
Better Microstructure
→ Higher Performance
→ Greater Reliability
→ Higher Performance
→ Greater Reliability
QUALITY & INSPECTION
Quality-Driven
Stainless Steel Casting Solutions
Quality assurance plays a critical role in ensuring that stainless steel castings meet the specified material, dimensional, mechanical, and inspection requirements.
Chemical Composition Analysis
Verification of alloy composition against material specifications.
Mechanical Testing
Tensile, yield, elongation, hardness, and impact testing where applicable.
Dimensional Inspection
Verification of dimensions and tolerances against customer drawings.
Liquid Penetrant Testing
Detection of surface-breaking discontinuities.
Radiographic Testing
Examination of internal casting soundness where specified.
Ultrasonic Testing
Inspection for internal discontinuities where technically suitable.
Metallographic Examination
Assessment of microstructure and grade-specific phase requirements.
Material Traceability & Documentation
Inspection records and material test documentation as contractually required.
Our Quality Commitment
We aim to deliver dependable stainless steel casting solutions through appropriate material selection, process control, systematic inspection, and customer-focused quality requirements.
REQUEST FOR QUOTATION (RFQ)
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Stainless Steel Castings
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