SAE 1215 Free Cutting Steel
We are SAE 1215 Free Cutting Steel Manufacturers, Suppliers, and Exporters in Mumbai, India. STEEL MART is an ISO 9001:2015 certified company established in 1986, with decades of experience in supplying high-quality free-cutting steel products to various industries. We specialize in manufacturing and supplying SAE 1215 Free Cutting Steels (SAE 1215 / AISI 1215 / DIN 11SMn37 / W.Nr 1.0736 / BS 970 230M07 / EN 1A) that meet national and international quality standards for ultra-high-speed automatic screw machine components, hydraulic fittings, precision turned fasteners, bushings, and high-volume CNC turned parts. SAE 1215 Free Cutting Steel is a premier resulphurized and rephosphorized low-carbon engineering steel specified under American Standards (AISI / SAE / ASTM A29) for maximum cutting speeds, superior surface finish, and minimal tool wear on automatic multi-spindle lathes. Formulated with low Carbon (0.09% max), Manganese (0.75–1.05%), high Sulphur (0.26–0.35%), and rephosphorized Phosphorus (0.04–0.09%), SAE 1215 achieves an extraordinary machinability rating of 135–140%. Rephosphorization slightly stiffens the ferrite matrix to ensure clean shear cutting, while Manganese Sulphide (MnS) inclusions break chips cleanly into small, manageable fragments. Supplied in cold drawn (+C), turned, or centerless ground condition, SAE 1215 provides tight dimensional tolerances (h9/h10), high bar straightness, and a mirror-smooth surface finish. Because of its unmatched high-speed machining performance and cost efficiency, SAE 1215 Steel is universally specified across high-volume automotive component turning, hydraulic connector production, electrical hardware, and precision turned parts manufacturing.
Our SAE 1215 Free Cutting Steels are 100% Prime – Tested & Guaranteed, ensuring precise chemical composition, dimensional accuracy, and consistent machinability. Each product is supplied with proper Mill Test Certificates (MTC) confirming compliance with AISI / SAE / ASTM standards with EN 10204 3.1 certification. STEEL MART follows strict quality control procedures and ensures timely delivery.
What is SAE 1215 Free Cutting Steel?
SAE 1215 Free Cutting Steel (AISI 1215 / SAE 1215 / DIN 11SMn37 / W.Nr 1.0736 / BS 970 230M07 / EN 1A) is a resulphurized and rephosphorized low-carbon unalloyed free-machining steel specified under American (AISI / SAE) standards. Formulated with max 0.09% Carbon, 0.75–1.05% Manganese, elevated Sulphur (0.26–0.35%), and Phosphorus (0.04–0.09%), SAE 1215 is optimized for high-volume screw machining on multi-spindle automatics and Swiss-type CNC lathes. Rephosphorization stiffens the ferrite matrix slightly, promoting crisp chip shear during turning, drilling, and thread milling. In cold drawn supply condition (+C), SAE 1215 provides high bar straightness, tight h9/h10 dimensional tolerances, and tensile strength between 420 and 580 MPa. It is widely specified for precision turned pins, hydraulic hose adaptors, electrical terminal posts, bushings, threaded studs, and high-volume automotive hardware.
140% Machinability
Maximum cutting speed potential on high-rpm automatic screw machines.
Rephosphorized Matrix
Phosphorus & sulphur additions promote clean metal shear & chip breaking.
Pristine Surface
Delivers smooth, burr-free surfaces without built-up edge formation.
420–580 MPa Tensile
Cold drawn (+C) bar condition offers enhanced tensile strength & bar straightness.
Extended Tool Life
Lower cutting friction significantly prolongs carbide insert life and lowers downtime.
Precision Fasteners
Universal choice for high-volume threaded bolts, nuts, studs, & hydraulic nipples.
Why Choose STEEL MART for SAE 1215 Free Cutting Steel
STEEL MART is the preferred choice for purchasing SAE 1215 Free Cutting Steel due to its strong reputation for quality and reliability. With over 40 years of experience in the steel industry, the company ensures that every product meets strict industry standards. The company follows strict quality inspection procedures to ensure that every SAE 1215 Free Cutting Steel product meets international standards.
Each product is carefully tested to ensure durability, strength, and performance. Customers trust STEEL MART for consistent quality, competitive pricing, and timely delivery. The company maintains a large inventory to meet urgent and bulk requirements efficiently. In addition to SAE 1215 Free Cutting Steels, STEEL MART also supplies a wide range of free-cutting, alloy steel, and carbon steel products for various industrial applications.
Chemical Composition of SAE 1215 Free Cutting Steel
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.09 % Max |
| Manganese (Mn) | 0.75 – 1.05 % |
| Sulphur (S) | 0.26 – 0.35 % |
| Phosphorus (P) | 0.04 – 0.09 % |
| Silicon (Si) | 0.05 % Max |
Elevated Sulphur (0.26-0.35%) and Phosphorus (0.04-0.09%) combine to deliver 140% high-speed machinability.
Equivalent Grades of SAE 1215 Free Cutting Steel
| Standard | Equivalent Grade |
|---|---|
| AISI / SAE | SAE 1215 / AISI 1215 |
| DIN / EN | 11SMn37 / 1.0736 / 11SMn30 |
| BS 970 | 230M07 / EN1A |
| JIS | SUM23 |
| ISO | 11SMn37 |
These international equivalents ensure global engineering specification compatibility.
Mechanical Properties of SAE 1215 Free Cutting Steel (Cold Drawn)
The mechanical properties of SAE 1215 Free Cutting Steels make them ideal for high-speed lathe turning, automatic screw machine components, and precision threaded fasteners. In cold drawn condition (+C), SAE 1215 delivers uniform mechanical strength and high bar straightness.
Manufacturing & Cold Processing of SAE 1215 Free Cutting Steel
SAE 1215 Free Cutting Steel bars undergo hot rolling, descaling, precision cold drawing, and stress relieving to establish dimensional accuracy and bar straightness.
Hot Rolling (1050°C - 1150°C)
Primary hot rolling of billets into round, hex, and square bar profiles with controlled cooling.
Shot Blasting & Pickling
Surface descaling to remove oxide scale prior to cold drawing operations.
Precision Cold Drawing (+C)
Drawn through precision carbide dies to achieve tight h9 / h10 dimensional tolerances.
Straightening & Cut-to-Length
Multi-roll reel straightening and precision saw cutting to customer specification.
SAE 1215 Industry Applications
SAE 1215 Free Cutting Steels are widely used across High-Speed Screw Machining, Automotive Fasteners, Hydraulic Fittings, Electrical Terminals, and General Engineering Spares.
Precision Screw Machine Parts
High-volume turned components, automatic lathe pins, inserts, spacers, & precision bushings.
Threaded Fasteners & Studs
Standard nuts, bolts, set screws, threaded rods, tie bars, & automotive studs.
Hydraulic Fittings & Couplings
Hose nipples, hydraulic adaptors, pipe union fittings, valve stems, & pneumatic connectors.
Automotive Precision Components
Control rod pins, wiper mechanism shafts, door latch components, & instrument cluster inserts.
Electrical Hardware & Terminals
Electrical connector pins, terminal posts, switchgear shafts, & earth grounding rods.
Textile & Appliance Spares
Spinning machine spindles, loom pins, washing machine shaft inserts, & hardware fittings.
Availability and Customization
At STEEL MART, we supply SAE 1215 Free Cutting Steels in a wide range of sizes and specifications.
| Profiles Available | Round Bars, Hexagon Bars, Square Bars, & Flat Bars |
| Diameter / Size | Round: 5 mm to 100 mm | Hex: 6 mm to 75 mm AF | Square: 6 mm to 50 mm |
| Condition | Supplied in Cold Drawn (+C), Centerless Ground, or Turned condition |
| Length | Standard lengths from 3 meters to 6 meters |
| Tolerances | h9, h10, or h11 precision drawn tolerance per ISO / DIN 175 |
| Customization | Band-saw cut-to-length and chamfered bar ends available upon request |
| Certification | Supplied with 100% Prime Mill Test Certificate (EN 10204 3.1) |
Our strict quality control ensures consistent chemical composition and machining performance.
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SAE 1215 Free Cutting Steel (AISI 1215 / SAE 1215 / DIN 11SMn37 / W.Nr 1.0736 / BS 970 230M07 / EN 1A) is a premier American standard rephosphorized and resulphurized low-carbon free-machining steel widely specified across automatic screw machining, precision turned components, hydraulic hose adaptors, threaded fasteners, electrical pins, and automotive hardware. Combining high sulphur (0.26–0.35%) and phosphorus (0.04–0.09%) for 140% machinability rating, clean metal shear, and high bar straightness in cold drawn condition (+C), it delivers maximum efficiency and superior surface finish on high-speed CNC lathes. Supplied by STEEL MART with strict quality inspection and full EN 10204 3.1 Mill Test Certification, SAE 1215 Free Cutting Steel is a benchmark grade for mass production turned parts.
Frequently Asked Questions
Common answers regarding SAE 1215 Free Cutting Steel specifications and parameters.
SAE 1215 contains max 0.09% Carbon, 0.75–1.05% Manganese, 0.26–0.35% Sulphur, 0.04–0.09% Phosphorus, and max 0.05% Silicon.
Phosphorus addition (0.04-0.09% P) slightly hardens the ferrite matrix, promoting crisp metal shearing during high-speed turning and drilling, resulting in a cleaner edge and higher surface finish.
SAE 1215 (AISI 1215) is equivalent to European DIN 11SMn37 (W.Nr 1.0736) and British BS 970 230M07 (EN 1A), offering matching chemical composition and machinability characteristics.
High-volume screw machine turned parts, nuts, bolts, studs, hydraulic hose fittings, electrical terminal pins, control rods, and textile machinery components.
STEEL MART supplies SAE 1215 in round bars, hexagon bars, square bars, and flat bars in Cold Drawn (+C), Centerless Ground, or Turned condition with mill test certificates.