Stainless Steel 440C Bars are composed of an alloy composed of chromium, molybdenum and carbon that offers excellent mechanical properties as well as heat resistance. With precise composition control and heat treatment processes in place, 440C bars offer consistent performance in demanding applications that demand dependability and longevity for long-term success.
Stainless Steel 440C bars are highly sought-after across industries for their exceptional features and applications, such as their versatility and wide use cases. Well known for its high carbon content and corrosion-resistance capabilities, martensitic stainless steels such as these bars boast durability and strength in abundance.
One of the key characteristics of stainless steel 440C bars is their exceptional hardness. Thanks to their high carbon content, these materials can reach 60 HRC (Rockwell C hardness scale). This quality makes these materials well suited for applications requiring strong wear-resistance such as bearings, valves and surgical instruments where durability plays a central role.
440C stainless steel bars stand out as superior corrosion resistors due to the 17% chromium content present; their long-term reliability in harsh environments such as aerospace, marine and chemical processing makes these materials well suited to applications exposed to potentially corrosive substances like aerospace. Marine or chemical processing.
Stainless steel 440C bars boast tremendous flexibility when it comes to application needs, offering easy machining, heat treating and hardening processes to fulfill them. Their applicability spans industries and applications: manufacturing tools or components from machines as well as industrial equipment require durable solutions that can withstand demanding conditions; stainless steel 440C bars make an invaluable addition.
Stainless steel 440C bars have become Common elements for aircraft production due to their strength, corrosion resistance and reliability; medical facilities also utilize them in making surgical instruments due to biocompatibility as well as resistance against sterilization processes.
Automotive industries make use of 440C stainless steel bars' properties in various applications, such as shafts, gears, bearings and bearing shields that require durability and wear resistance for peak performance. Cutlery makers take advantage of its hardness and corrosion resistance properties when manufacturing cutlery for extended service and hygiene benefits.
Apple Steels, a renowned manufacturer and supplier of Stainless steel 440C bars in Mumbai, India. Among their offerings are the highly sought-after stainless steel 440C bars, prized for their exceptional hardness and corrosion resistance. Trusted across industries, these bars serve diverse applications, from aerospace to medical and automotive sectors.
Melting and Casting
Steel and alloying metals are loaded into an electric arc furnace. Once in the furnace, the metal is heated to a specific temperature above its melting point, usually in excess of 2800°F.
Forming
Most cast steel is formed by hot rolling—the slab, bloom, or billet is heated and passed through large rollers, stretching out the steel into a longer, thinner form.
Heat treatment
Heat treatment strengthens rolled stainless steel by recrystallizing the deformed microstructure. Most stainless steel is heat treated by annealing.
Descaling
A rolled piece of stainless steel acquires a layer of oxidized “mill scale,” which needs to be washed away to restore a shiny surface finish.
Cutting or Machining
Stainless steel is cut to a specified shape and size. The stainless steel can be sheared with circular knives, sawed with high-speed blades, or blanked with punches.
| SS Bar Wire Standard | ASTM A276 / A479, ASME SA276 / SA479 |
| Stainless Steel Bar Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Stainless Steel Round bar size | Diameter: 3-~800mm |
| Stainless Steel Hex Bar size | 2-100mm A/F |
| SS Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Stainless Steel Square bar size | 4 to 100mm |
| SS Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Stainless Steel Rectangular Size | 33 x 30mm to 295 x 1066mm |
| SS Bars Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| SS Bar Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Tempers | Tempers range from dead soft annealed to ultra spring temper |
| Rolled Stainless Steel Flat Bars Condition | Hardened & tempered, annealed |
| Cold Rolled Bar Technique | Stainless Steel Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Stainless Steel Rounds Bar Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| STANDARD | UNS | WNR. |
|---|---|---|
| SS 440C | S44004 | 1.4125 |
| Grade | C | Mn | Si | P | S | Cr | Ni |
|---|---|---|---|---|---|---|---|
| 440C | 0.95 - 1.20 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 16.00 - 18.00 | - |
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
|---|---|---|---|---|---|
| Annealed* | 758 | 448 | 14 | 269HB max | - |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
| * Annealed properties are typical for Condition A of ASTM A276# Brinell Hardness is ASTM A276 specified maximum for annealed 440C, B and C. | |||||
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