CATALOGUE.
High-performance alloy, carbon & stainless steel round bars, ingots and Round Corner Squares (RCS) engineered to power global industries.
Alloy Steel Round Bars
High-yield fatigue strength, toughness & resilience
About Alloy Steel Round Bars
Subhlaxmi Steel is a premier manufacturer and exporter of high-integrity alloy steel round bars. Engineered for exceptional fatigue strength, structural resilience, and toughness, our bars deliver high yield characteristics and superior weldability under extreme operating stresses.
We manufacture widely specified grades including EN24 (high-tensile nickel-chromium-molybdenum steel for heavy-duty shafts and machinery), EN31 (high-carbon chromium steel offering superior compressive strength and abrasion resistance for bearings), and SAE 4140 (chrome-moly steel with high fatigue limits and durability). Pre-hardened bars can be surface-hardened via nitriding, flame, or induction hardening on request.
We supply these bars in custom sizes from 16 mm to 130 mm, tailored for critical engineering applications in energy, heavy machinery, and automotive sectors.
Key Specifications
| Size Range | 16 mm – 130 mm diameter |
| Standards | IS, ASTM, DIN, BS, EN, JIS, GOST, Customer Spec |
| Supply Form | Round Bars, Forging Stock |
| Surface Finish | Black (Hot Rolled), Annealed & Straightened, Slow Cooled, Normalised |
| Heat Treatment | Annealing available on request |
Available Grades
| Grade | Equivalent | Standard | Main Application |
|---|---|---|---|
| EN19 | AISI 4140 | ASTM / DIN | Shafts, Automotive Components |
| EN24 | AISI 4340 | ASTM | Heavy Engineering, Shafts |
| EN31 | 52100 | ASTM | Precision Bearings |
| EN8 | C45 | IS | General Engineering |
| EN9 | C55 | IS | Automotive, General Engineering |
| EN18 | DIN | DIN | Machinery Components |
| EN36 | BS | BS | Case-Hardened Gears |
| EN353 | IS | IS | Transmission, Gears |
| SAE8620 | ASTM | ASTM | Gears, Machine Parts |
| 16MnCr5 | DIN | DIN | Case Hardening, Gears |
| 20MnCr5 | DIN | DIN | Automotive, Gears |
| 42CrMo4 | DIN | DIN | Heavy Engineering, Shafts |
| 34CrNiMo6 | DIN | DIN | Aerospace, Automotive |
| H11 Tool Steel | ASTM | ASTM | Forging Dies |
| H13 Tool Steel | ASTM | ASTM | Die Casting, Die Making |
Applications
Engineered for high-stress environments, our alloy steel round bars deliver superior tensile strength and structural integrity across engineering, manufacturing, and heavy-duty sectors.
Carbon Steel Round Bars
Hot-rolled versatility for structural & engineering use
About Carbon Steel Round Bars
Our carbon steel round bars are manufactured to deliver reliable structural strength, high ductility, and excellent machining properties. Hot rolled to ensure uniform grain structure and consistent mechanical properties throughout the cross section.
We supply key grades such as IS 2062 for structural fabrication, C45/C50 medium carbon steel for machining crankshafts and axles, and SAE 1018/1020 low carbon grades for components requiring case-hardening. These grades deliver highly consistent weldability, uniform hardness, and stable mechanical characteristics under load.
These bars offer an ideal balance of performance and cost-efficiency for fabrication, machinery components, and automotive engineering.
Key Specifications
| Size Range | 16 mm – 130 mm diameter |
| Supply Cond. | Hot Rolled |
| Standards | IS, ASTM, Customer Specifications |
| Surface | Black (Hot Rolled) |
| Supply Form | Round Bars |
Available Grades
| Grade | Standard | Size (mm) | Condition |
|---|---|---|---|
| IS2062 | IS | 16-130 | HOT ROLLED |
| C20 | IS | 16-130 | HOT ROLLED |
| C30 | IS | 16-130 | HOT ROLLED |
| C35 | IS | 16-130 | HOT ROLLED |
| C40 | IS | 16-130 | HOT ROLLED |
| C45 | DIN | 16-130 | HOT ROLLED |
| C50 | DIN | 16-130 | HOT ROLLED |
| C55 | DIN | 16-130 | HOT ROLLED |
| SAE1018 | ASTM | 16-130 | HOT ROLLED |
| SAE1020 | ASTM | 16-130 | HOT ROLLED |
| SAE1040 | ASTM | 16-130 | HOT ROLLED |
| SAE1045 | ASTM | 16-130 | HOT ROLLED |
| SAE1050 | ASTM | 16-130 | HOT ROLLED |
Applications
Carbon steel round bars are a foundation material for structural and engineering applications requiring reliable strength at cost-effective pricing.
Stainless Steel Round Bars
Superior corrosion resistance for demanding environments
About Stainless Steel Round Bars
Designed for harsh environments, our stainless steel round bars offer elite resistance to pitting, crevice corrosion, and high-temperature oxidation. We produce a wide selection of premium austenitic and martensitic grades.
Our inventory features premium austenitic grades (like SS304/304L and SS316/316L) to resist pitting and chemical corrosion, alongside martensitic grades (SS410, SS420, SS431) which are heat-treatable to achieve elevated mechanical strength and surface hardness in high-stress valves, marine pump shafts, and fasteners.
With smooth surface finishes and high dimensional accuracy, these bars are the choice for hygienic food-grade equipment, pharmaceutical systems, and marine engineering.
Key Specifications
| Size Range | 16 mm – 130 mm diameter |
| Standards | ASTM, DIN, BS, IS, EN, Customer Spec |
| Supply Form | Round Bars |
| Surface Finish | Bright Polished, Black, BA Finish, Rough Turned |
| Grade Types | Austenitic, Martensitic, Ferritic |
Available Grades
| Grade | Standard | Size (mm) |
|---|---|---|
| SS304 | ASTM | 16-130 |
| SS304L | ASTM | 16-130 |
| SS316 | ASTM | 16-130 |
| SS316L | ASTM | 16-130 |
| SS416 | ASTM | 16-130 |
| SS431 | ASTM | 16-130 |
| SS410 | ASTM | 16-130 |
| SS420 | ASTM | 16-130 |
Applications
Critical wherever corrosion, elevated temperatures, or hygiene are key design constraints.
Alloy Steel Ingots
Premium cast blocks for rolling and high-pressure forging
About Alloy Steel Ingots
We cast premium alloy steel ingots using advanced bottom-pouring techniques via the Electric Induction Furnace (EIF) route, utilizing carefully selected scrap and raw materials.
Available in square forging ingot formats from 130 to 650 kg, our ingots are bottom-poured to ensure minimal macro-segregation and high internal soundness. We produce key forging grades such as EN19, EN24, EN353, and H13 tool steel, fully grinded or spot grinded to eliminate surface faults prior to rolling.
Every ingot is processed to be free from surface cracks and deep imperfections. Stamped markings with the heat number and weight ensure full traceability from raw melt to final product.
Key Specifications
| Mfg. Route | EIF (Electric Induction Furnace) |
| Sizes | 4×5, 5×6, 5.5×6.5, 7×8, 9×10, 9.5×10.25 inches |
| Ingot Weight | 130 to 650 kg |
| Marking | Grade, Heat Number, Weight & Size |
| Surface | Fully Grinded or Spot Grinded |
| Standards | IS, ASTM, DIN, Customer Specifications |
Available Grades
| Grade | SIZE Range | Manufacturing Route |
|---|---|---|
| EN19 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
| EN24 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
| EN31 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
| EN353 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
| SAE8620 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
| 42CrMo4 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
| H13 | 4X5, 5X6, 5.5X6.5, 7X8, 9X10, 9.5X10.25 | EIF |
Applications
Steel ingots are the primary raw input for rolling and forging operations across heavy industry and infrastructure manufacturing.
Alloy Steel RCS
Round Corner Square
Defect-free round corner squares for high-stress automotive drop forging
About Alloy Steel RCS
Our Round Corner Squares (RCS) are hot-rolled specifically for high-integrity forging. Engineered with safe-handling radius corners, they are processed to be free from surface defects, cracks, or scale shuts.
Produced in size squares from 65 mm to 100 mm with safe radius corner geometry, our RCS products are supplied in EN19, EN24, and 34CrNiMo6 grades. The engineered radius edge optimizes metal flow lines during closed-die forging, eliminating material folding, cold-shuts, and premature die wear.
The controlled radius design ensures uniform metal flow during drop forging, reducing dye wear and optimizing production speed for flanges and heavy engineering blanks.
Key Specifications
| Available Sizes | 65×65, 75×75, 90×90, 100×100 mm |
| Testing | 100% Ultrasonic Testing (UT) |
| Heat Treatment | Soft Annealing, Solution Annealing |
| Surface Finish | Hot Rolled Black, Spot Grinded, Fully Grinded |
| Environment | Free from Lead, Mercury & Radioactive Elements |
Available Grades
| Grade | Size |
|---|---|
| EN19 | 65X65, 75X75, 90X90, 100X100 |
| EN24 | 65X65, 75X75, 90X90, 100X100 |
| EN31 | 65X65, 75X75, 90X90, 100X100 |
| EN353 | 65X65, 75X75, 90X90, 100X100 |
| SAE8620 | 65X65, 75X75, 90X90, 100X100 |
| 42CrMo4 | 65X65, 75X75, 90X90, 100X100 |
| 34CrNiMo6 | 65X65, 75X75, 90X90, 100X100 |
Applications
RCS products are the preferred input for drop-forging demanding zero-defect surface quality and uniform internal consolidation.
Standards & Finishes
Manufactured, tested, and certified in conformance with all major international specifications and custom client standards.
Testing & Verification
Rigorous inspection regimes performed on all supply lots to ensure complete structural soundness and chemical composition validation.