Semih Metals, located in Istanbul, Turkey, has built a solid reputation as a reliable manufacturer and supplier of Haynes 188 Bars and Rods. They specialize in high-performance nickel-based alloy solutions that thrive in extreme environments. Haynes 188 is crafted to deliver outstanding high-temperature strength, along with impressive oxidation and corrosion resistance, making it perfect for tough chemical and industrial applications. At Semih Metals, they prioritize precision manufacturing, rigorous quality control, and compliance with international standards. Their Haynes 188 Bars and Rods come in a variety of sizes and specifications, serving industries like chemical processing, aerospace, and power generation, where long-lasting reliability and resistance to thermal degradation are crucial.
The composition of Haynes 188 Bars and Rods includes nickel (52–57%), cobalt (19–22%), chromium (19–21%), tungsten (2–3%), molybdenum (2%), and iron (the balance). This unique blend gives the alloy remarkable mechanical strength at high temperatures, excellent resistance to oxidation and carburization, and solid creep and fatigue resistance. In terms of mechanical properties, Haynes 188 boasts a tensile strength ranging from 800 to 1000 MPa, a yield strength of about 450 to 600 MPa, and a hardness between 190 and 240 HB, all while maintaining good ductility and toughness. Its combination of high-temperature performance and corrosion resistance makes it a top choice for demanding engineering applications.
| Standards : | ASTM 5772, ASME S5772 |
| Dimensions : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Wire : | Thickness starting from 0.05mm |
| Round bar size : | Diameter: 3-~800mm |
| Hex Bar size : | 2-100mm A/F |
| Flat bar size : | Thickness: 2 -100mm / Width: 10 to 500mm |
| Square bar size : | 4 to 100mm |
| Rectangular Bars Size : | 33 x 30mm to 295 x 1066mm |
| Hollow Bar : | 32mm OD x 16mm ID to 250mm OD x 200mm ID |
| Tolerance : | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Finish : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Grade | C | Mn | P | S | Si | Ni | Cr | Fe | W | B | La |
| Haynes 188 | .05 – .15 | 1.25 max | .020 max | .015 max | .20 – .50 | 20.0 – 24.0 | 21.0 -23.0 | 3.0 max | 13.0 -15.0 | .015 max | .03 – .15 |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| ksi – 65 , MPa – 446 | ksi – 140 , MPa – 963 | 55 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Haynes 188 | 2.4683 | R30188 |
Haynes 188 bars and rods exhibit excellent high-temperature strength and oxidation resistance, maintaining structural integrity up to 2000°F (1093°C), making them ideal for aerospace, turbine, and high-performance engine applications.
To maintain Haynes 188 bars, regularly inspect for corrosion or wear, avoid excessive temperature fluctuations, clean with non-abrasive methods, and store in a dry, cool environment to prevent degradation.
Yes, Haynes 188 rods can be customized in size and length according to specific requirements. Manufacturers can provide tailored solutions based on customer specifications for industrial applications.
Haynes 188 Bars and Rods find extensive use in industries that require components capable of withstanding high temperatures and corrosive environments. They are commonly found in chemical processing equipment, furnace hardware, gas turbine components, heat exchangers, and aerospace parts. Additionally, this alloy is utilized in power generation plants, petrochemical facilities, and other high-stress industrial settings where extreme heat and corrosive substances are prevalent. With their reliable long-term performance in critical applications, Haynes 188 Bars and Rods are an essential material for engineers and manufacturers who prioritize durability, precision, and thermal resistance.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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