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Precision Machining Work (Material)

Specialization Material
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We work with industry-standard materials such as stainless steel, alloys, carbon steel and specialty metals like Hastelloy and Duplex Stainless Steel. Each material undergoes rigorous testing and adheres to globally recognized standards like ASTM, ASME and ISO, ensuring that our clients receive components that offer superior performance, even in the most challenging environments.

Whether it's corrosion-resistant alloys for chemical industries or high-strength steels for heavy machinery, our deep material knowledge allows us to deliver custom solutions that meet both the functional and regulatory requirements of each project.

MaterialBar Stock ForgingUNSSpecification (Bar Stock)
316 stainless SteelASTM A-276S31600ASTM A-276, ASTM A-479 F-316
316 stainless SteelASTM A-276S31603ASTM A-276, ASTM A-479 F-316L, ASTM A-182 531603
Alloy 20ASTM B-473No8020ASTM B-473, ASTM B-462 No8020
HastelloyASTM B-574N10276ASTM B-574, ASTM B-574 N10276
Alloy 400ASTM B-164N04400ASTM B-164, ASTM B-564 N04400
Alloy 600ASTM B-166N06600ASTM B-166, ASTM B-564 N06600
Duplex Stainless Steel (S31803)ASTM A-108S31600ASTM A-108, ASTM A-105, ASTM A-182 S31600
Carbon SteelASTM A-276-ASTM A-276, ASME SA-479, ASTM A-182, ASME SA-182
304 Stainless SteelASTM A-276-ASTM A-276, ASME SA-479, ASTM A-182, ASME SA-182
  • At Kostevo, we pride ourselves on delivering components made from the highest quality materials. Our range of bar stock and forging materials complies with rigorous industry standards, ensuring reliability and performance in demanding applications:
  • 316 Stainless SteelAvailable in ASTM A-276, with UNS designations S31600 and S31603, meeting specifications such as ASTM A-479 and ASTM A-182.
  • Alloy 20Compliant with ASTM B-473 standards and No8020 UNS code, suited for corrosive environments with specifications like ASTM B-462.
  • Hastelloy (N10276)Manufactured to ASTM B-574, ideal for severe chemical conditions, with specifications ensuring durability and resistance.
  • Alloy 400 & Alloy 600Both materials meet ASTM B-164 and ASTM B-166 standards respectively, with UNS codes N04400 and N06600, delivering high strength and corrosion resistance.
  • Duplex Stainless Steel (S31803) A high-performance material with standards like ASTM A-108 and ASTM A-182, offering superior strength and corrosion resistance.
  • Carbon Steel & 304 Stainless Steel Manufactured under ASTM A-276, they provide robust, cost-effective solutions for general-purpose applications.