Alloy Steel Products in India
Home > Alloy Steel Products > Alloy Steel Products
Aashish Metals is a leading manufacturer, supplier & exporter of premium alloy steel products in India — serving oil & gas, power, construction, and petrochemical industries across 40+ countries.
At Aashish Metals, we take pride in offering one of the most comprehensive ranges of alloy steel products in India precisely engineered to meet the demands of critical industrial applications. Alloy steel is created by blending iron with carefully measured quantities of elements such as chromium, molybdenum, manganese, nickel, and vanadium, which collectively enhance its mechanical strength, heat resistance, wear tolerance, and corrosion protection far beyond what conventional carbon steel can achieve.
Whether you’re sourcing alloy steel pipes and tubes for high-pressure boilers, alloy steel plates and sheets for pressure vessels, or alloy steel pipe fittings for complex piping assemblies, Aashish Metals delivers every product to exacting ASTM, ASME, DIN, and EN standards. Our state-of-the-art infrastructure, in-house quality control, and decades of metallurgical expertise make us a preferred partner for engineers, procurement teams, and EPC contractors across India and globally.
What Is Alloy Steel? A Complete Definition
Alloy steel is a category of steel formed by the systematic addition of one or more alloying elements beyond carbon to iron in order to achieve specific mechanical, thermal, or chemical properties. Unlike plain carbon steel, which relies solely on carbon content for its strength, alloy steel draws on a carefully calibrated blend of elements to unlock a much broader spectrum of performance characteristics.
The most commonly used alloying elements and their effects include:
- Chromium (Cr): Improves corrosion resistance and hardness
- Molybdenum (Mo): Enhances high-temperature strength and creep resistance
- Manganese (Mn): Increases toughness and hardenability
- Nickel (Ni): Boosts toughness and improves corrosion resistance at low temperatures
- Vanadium (V): Refines grain structure and improves wear resistance
- Silicon (Si): Improves strength and magnetic properties
- Tungsten (W): Increases hardness at elevated temperatures
- Aluminium (Al): Used in nitriding steels to improve surface hardness
Depending on the total percentage of alloying elements, alloy steels are broadly classified into two categories:
Low-Alloy Steel — Contains less than 5% alloying elements. Widely used in structural engineering, pipelines, boilers, and pressure vessels due to superior strength-to-weight ratio and good weldability.
High-Alloy Steel — Contains more than 5% alloying elements. This includes stainless steels and tool steels, engineered for applications demanding exceptional corrosion, heat, or wear resistance.
There are also several important subcategories:
- High-Strength Low-Alloy (HSLA) Steel — Used widely in construction and structural applications
- Structural Alloy Steel — High strength, ductility, and weldability for heavy engineering
- Microalloyed Steel — Fine-grained, high-strength steels for automotive and pipeline use
- Tool Steel — Exceptional hardness and wear resistance for cutting tools and dies
- Maraging Steel — Ultra-high strength with good toughness for aerospace applications
Alloy Steel Products List
Aashish Metals stocks and supplies an extensive range of alloy steel products across multiple forms and grades. From standard inventory to custom-specified items, we fulfil requirements for projects of all scales.
1. Alloy Steel Pipes & Tubes
Seamless and welded alloy steel pipes and tubes engineered for high-pressure, high-temperature service in power plants, boilers, and refineries. Our alloy steel pipes and tubes conform to ASTM A335 and A213 standards.
- Alloy Steel P5 Pipes & Tubes — 5% Cr, 0.5% Mo
- Alloy Steel P9 Pipes & Tubes — 9% Cr, 1% Mo
- Alloy Steel P11 Pipes & Tubes — 1.25% Cr, 0.5% Mo
- Alloy Steel P22 Pipes & Tubes — 2.25% Cr, 1% Mo
- Alloy Steel P91 Pipes & Tubes — 9% Cr, 1% Mo Modified
2. Alloy Steel Plates, Sheets & Coils
Heat-treated plates and sheets ideal for pressure vessels, boiler drums, fabrication structures, and heavy engineering applications. All alloy steel plates are supplied to ASTM A387 specifications.
- Alloy Steel Grade 5 Sheets & Plates — 5% Cr
- Alloy Steel Grade 9 Sheets & Plates — 9% Cr
- Alloy Steel Grade 11 Sheets & Plates — 1.25% Cr, 0.5% Mo
- Alloy Steel Grade 12 Sheets & Plates — 1% Cr, 0.5% Mo
- Alloy Steel Grade 22 Sheets & Plates — 2.25% Cr, 1% Mo
3. Alloy Steel Bars, Rods & Wires
Precision-engineered round bars, flat bars, hex bars, and wire rods for structural, mechanical, and automotive applications. Our alloy steel bars are manufactured to SAE, ASTM, and DIN standards.
- Common Grades: SAE 4130, 4140, 4340, SCM415, SCM420, EN 19, EN 24
- Size Range: 10mm to 300mm diameter
- Forms: Round, square, flat, hexagonal, threaded
4. Alloy Steel Buttweld Pipe Fittings
High-integrity buttweld fittings for industrial piping systems, available in elbows, tees, reducers, end caps and more. All alloy steel buttweld fittings conform to ASTM A234 and ASME B16.9.
- Alloy Steel A234 WP11 Pipe Fittings
- Alloy Steel A234 WP22 Pipe Fittings
- Alloy Steel A234 WP5 Pipe Fittings
- Alloy Steel A234 WP9 Pipe Fittings
- Alloy Steel A234 WP91 Pipe Fittings
- Alloy Steel A234 WP92 Pipe Fittings
5. Alloy Steel Forged Fittings (Threaded & Socket Weld)
Forged alloy steel fittings for high-pressure and high-temperature connections in critical piping systems. Available in threaded and socket weld configurations to ASTM A182 and ASME B16.11.
- Alloy Steel F5 Threaded Fittings | F5 Socket Weld Fittings
- Alloy Steel F9 Threaded Fittings | F9 Socket Weld Fittings
- Alloy Steel F11 Threaded Fittings | F11 Socket Weld Fittings
- Alloy Steel F22 Threaded Fittings | F22 Socket Weld Fittings
- Alloy Steel F91 Threaded Fittings | F91 Socket Weld Fittings
6. Alloy Steel Flanges
Weld neck, slip-on, blind, socket weld, threaded, and lap joint flanges in all major alloy steel grades, conforming to ASTM A182, ASME B16.5, and ASME B16.47.
- Grades: F5, F9, F11, F22, F91
- Types: Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, Ring Type Joint
- Sizes: 1/2″ to 24″ (larger sizes on request)
- Pressure Class: 150# to 2500#
7. Alloy Steel Fasteners
Hex bolts, stud bolts, nuts, washers, and threaded rods manufactured to exacting torque and dimensional tolerances. Critical for bolting flanged joints in high-temperature and high-pressure systems.
- Standards: ASTM A193, A194, A307
- Common Grades: B7, B7M, L7, 2H, 2HM
- Forms: Stud bolts, hex bolts, square bolts, heavy hex nuts, coupling nuts
Technical Data
Hastelloy Plates & Sheets Specification
| Parameter | Details |
|---|---|
| Standards | ASTM B575, B333, B435 / ASME SB575, SB333, SB435 |
| Width | 1000 mm / 1219 mm / 1250 mm / 1500 mm / 2000 mm |
| Length | 2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm |
| Sheet thickness | 0.1 mm to 6 mm |
| Plate thickness | 6 mm to 100 mm |
| Coil / strip thickness | 0.1 mm to 3 mm |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard |
| Finish | HR, CR, 2B, 2D, BA, No.8 Mirror, SATIN, Plastic Coated |
| Form | Plates, Sheets, Coils, Foils, Strips, Blanks, Rings, Profiles, Perforated |
| Test certificates | EN 10204 Type 3.1 / 3.2, NABL Accredited Lab Reports |
Hastelloy Plates & Sheets Grade Equivalents
| Grade | UNS no. | Werkstoff Nr. | JIS | EN | AMS | Key standard |
|---|---|---|---|---|---|---|
| Hastelloy C276 | N10276 | 2.4819 | NW 0276 | NiMo16Cr15W | 5276 | ASTM B575 |
| Hastelloy C22 | N06022 | 2.4602 | NW 6022 | NiCr21Mo14W | 5409 | ASTM B575 |
| Hastelloy B2 | N10665 | 2.4617 | — | — | — | ASTM B333 |
| Hastelloy B3 | N10675 | 2.4600 | — | — | — | ASTM B333 |
| Hastelloy X | N06002 | 2.4665 | — | NiCr22Fe18Mo | 5536 | ASTM B435 |
Hastelloy C276 vs C22 vs B2 — Key Differences at a Glance
| Property | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 |
|---|---|---|---|
| UNS no. | N10276 | N06022 | N10665 |
| Ni content | ~57% | ~56% | ~69% |
| Mo content | ~16% | ~13% | ~28% |
| Cr content | ~15.5% | ~22% | ~1% max |
| W content | ~3.7% | ~3% | — |
| Best resistance | Oxidising + reducing media | Oxidising acids, mixed acid | HCl at all concentrations |
| Max service temp. | ~1038 °C | ~1038 °C | ~538 °C |
| Key standard | ASTM B575 | ASTM B575 | ASTM B333 |
| Typical use | FGD, chemical reactors | Pharma, mixed acid | Hydrochloric acid plants |
| Werkstoff Nr. | 2.4819 | 2.4602 | 2.4617 |
| Supplier page | C276 Plates | C22 Plates | C276 Round Bars |
Certifications & Standards: Standards We Supply Against
| Standard body | Specification | Applies to |
|---|---|---|
| ASTM | B575 | Hastelloy C276, C22 sheet & plate |
| ASTM | B333 | Hastelloy B2, B3 sheet & plate |
| ASTM | B435 | Hastelloy X sheet & plate |
| ASME | SB575 | Pressure vessel / boiler applications |
| ASME | SB333 | Pressure vessel applications |
| ASME | SB435 | Pressure vessel applications |
| AMS | 5276 | Hastelloy C276 aerospace |
| AMS | 5536 | Hastelloy X aerospace |
| DIN / EN | 2.4819, 2.4602, 2.4617, 2.4665 | European equivalent grades |
| ISO | 9001:2015 | Quality management system |
Alloy Steel Products Applications
Aashish Metals’ alloy steel products serve critical roles across a wide spectrum of industries. Their superior performance under mechanical stress, elevated temperatures, and corrosive environments makes them the material of choice wherever reliability is non-negotiable.
Oil & Gas Industry: Alloy steel pipes, buttweld fittings, and flanges are extensively used in refineries and petrochemical plants. Alloy steel P91 pipes handle extreme pressures in high-temperature process lines.
Power Generation: Boiler tubes, superheater lines, and heat exchanger components made from Chrome-Molybdenum alloy steels are fundamental to thermal power plants. Grades like P11 and P22 deliver the creep resistance essential for sustained operation at 500°C+.
Construction & Infrastructure: Alloy steels are indispensable in large-scale construction — from skyscraper frameworks and bridge girders to airport structures. HSLA steel reduces structural weight while maintaining load-bearing capacity. Alloy steel bars, rails, and structural sections are widely specified by civil engineers.
Petrochemical & Chemical Processing: Corrosion-resistant alloy steels handle aggressive media including acids, chlorides, and sulfur-bearing fluids. Alloy steel Grade 22 plates are favoured for pressure vessel fabrication in this sector.
Automotive & Heavy Engineering: SAE 4140 and 4340 alloy steel bars are used in gearboxes, crankshafts, connecting rods, axles, and other drivetrain components demanding hardness and fatigue resistance.
Aerospace & Defence: Grades like 4130 chromoly and A286 are specified for airframe structures, landing gear, and fastener applications where strength-to-weight ratio and fatigue life are critical.
Mining & Material Handling: Wear-resistant alloy steels form the cutting edges, liners, and structural members of mining equipment operating in abrasive and impact-intensive environments.
Our Manufacturing Process & Quality Standards
At Aashish Metals, every alloy steel product passes through a rigorous multi-stage quality assurance process before dispatch. We believe that quality is not inspected in — it is built in, from raw material selection to final packaging.
- Raw Material Verification — Mill test reports (MTRs) and material certifications checked against ASTM / EN standards.
- Dimensional Inspection — Calibrated instruments verify OD, wall thickness, length, and form tolerances per applicable standards.
- Chemical Composition Analysis — Spectrometric analysis confirms alloying element percentages match the specified grade.
- Mechanical Testing — Tensile, yield, hardness, and impact tests performed by accredited third-party laboratories.
- Non-Destructive Testing (NDT) — Ultrasonic testing (UT), radiographic testing (RT), dye penetrant (DPT), and magnetic particle inspection (MPI) as required by specification.
- Hydrostatic Pressure Testing — Pipes and tubes pressure-tested to ensure zero leakage under rated conditions.
- Heat Treatment Verification — Normalising, annealing, quench & temper records reviewed for full compliance.
- Final Marking & Documentation — Products marked with grade, heat number, size, and standard; full documentation pack issued with every order.
Certifications, Approvals & International Standards
Aashish Metals operates under a certified quality management framework and supplies products conforming to a wide array of international standards:
Quality Certifications:
- ISO 9001:2015 — Quality Management System
- PED 2014/68/EU — Pressure Equipment Directive Certified
Product Standards We Supply To:
- ASTM — A335, A213, A182, A234, A387, A519, A193, A194
- ASME — B16.5, B16.47, B16.9, B16.11, B16.25
- DIN / EN — EN 10028, EN 10216, EN 10217, EN 10083
- API — API 5L (alloy grades)
- NACE — MR0175 / ISO 15156 (H2S service)
- IBR — Indian Boiler Regulations compliance available
Third-Party Inspections Accepted: Bureau Veritas (BV) · Lloyds Register (LR) · DNV GL · SGS · TÜV · RINA · ABS
Alloy Steel Products: Frequently Asked Questions
Alloy steel contains deliberate additions of elements — such as chromium, molybdenum, nickel, vanadium, and manganese — that carbon steel does not. These additions enhance specific properties including strength, hardness, corrosion resistance, and high-temperature performance. Carbon steel derives its properties primarily from carbon content and has limited resistance to corrosion and heat. For demanding industrial applications such as power plant boilers or oil & gas pipelines, alloy steel is the preferred choice.
Alloy steel is most heavily used in oil & gas, power generation, petrochemicals, construction, automotive, aerospace, defence, and mining. The specific grade chosen depends on the service temperature, pressure, and chemical environment of the application.
P11 (1.25% Cr – 0.5% Mo) is a chrome-molybdenum alloy steel primarily used for high-temperature and high-pressure service. It is widely specified for boiler tubes, superheater lines, and heat exchangers in power plants and refineries. We supply P11 pipes & tubes and F11 threaded fittings to ASTM A335 and A182 standards.
P22 (2.25% Cr – 1.0% Mo) is a proven grade for boiler tubes and pressure vessels operating up to approximately 580°C. P91 (9% Cr – 1% Mo, with V, Nb, and N additions) offers significantly superior creep strength, allowing thinner walls and lighter designs at temperatures up to 625°C. P91 is increasingly preferred in ultra-supercritical power plants. Both are available from Aashish Metals in pipes and fittings.
Yes. We maintain flexibility in sourcing and supplying products to non-standard sizes, custom lengths, and special chemical compositions. We work directly with accredited mills to fulfil custom orders. Please contact our technical team with your specifications.
You can request a free quote by filling out our online enquiry form, emailing our sales team, or calling us directly. Please mention the material grade, product form, size, quantity, and required standards for a fast and accurate response.
Ready to Source Premium Alloy Steel Products in India?
Aashish Metals combines deep metallurgical knowledge, a vast product inventory, and a commitment to on-time delivery to become your most reliable alloy steel partner.
Why Choose Aashish Metals?
- ISO 9001:2015 & PED 2014/68/EU Certified
- 548+ products across materials and grades
- Export to 40+ countries worldwide
- Third-party inspection (BV, SGS, TÜV) accepted
- Fast turnaround on custom requirements
- Dedicated technical support team
- Full traceability documentation with every order
Products
Please feel free to contact us. We will get back to you with 2 business days. Or just call us now.
