Specialty Alloy Processing
Stainless Steel Alloys Processing
& Global Supply
Operating from Singapore, ABCOM sources, processes, and supplies specialty stainless steel — chromium-nickel compositions including duplex, super duplex, and high-alloy grades — to industrial buyers and recyclers across Europe, Asia, and the Americas. Our 25-year track record in corrosion-resistant metal flows underpins every transaction.
Material Overview
What Are Stainless Steel Alloys?
Stainless steel alloys are chromium-containing steel alloys with a minimum of 10.5% chromium by mass. This chromium content forms a passive oxide layer on the metal surface that self-repairs in the presence of oxygen, providing inherent resistance to corrosion without additional coatings or treatments.
Higher alloy grades extend this corrosion resistance significantly through additions of nickel, molybdenum, and nitrogen. Molybdenum enhances resistance to pitting and crevice corrosion in chloride environments. Nitrogen improves strength and pitting resistance. Together, these additions produce the duplex, super duplex, and highly alloyed austenitic grades used in the most demanding industrial applications.
ABCOM trades and processes stainless steel scrap and primary forms across standard and high-alloy grades. Our technical grading capability ensures material entering downstream supply chains meets the compositional requirements of stainless steel producers, re-melters, and fabricators. See our full product range for available grades.
End Markets
Industries & Applications
Chemical Processing
Reactors, vessels, and piping handling aggressive acids and high-temperature fluids require stainless grades with molybdenum and nitrogen additions. SS 316, duplex, and SMO 254 are standard specifications in this sector.
Marine & Offshore
Seawater systems, offshore platforms, and subsea equipment demand chloride-resistant alloys. Super duplex and 6% molybdenum grades are specified for their resistance to pitting and stress corrosion cracking in saltwater environments.
Oil & Gas
Valves, pumps, and heat exchangers in corrosive hydrocarbon environments require stainless steel grades with proven performance against hydrogen sulphide, chlorides, and high-pressure conditions.
Food & Pharmaceutical
Hygienic processing equipment requires clean, non-reactive surfaces. Austenitic stainless steel grades including SS 316 are specified for their corrosion resistance, cleanability, and compliance with food-contact and pharmaceutical standards.
Industrial Manufacturing
Structural components, pressure vessels, and high-temperature process equipment benefit from stainless steel grades combining corrosion resistance with mechanical strength across a range of operating conditions.
Desalination
Plant components exposed to concentrated brine and seawater demand the highest-performing stainless grades. Super duplex and SMO 254 are widely used in reverse osmosis and multi-stage flash desalination systems.
Material Categories
Grades We Supply
SS 316 & SS 310
SS 316 is the workhorse austenitic grade, adding molybdenum to the standard 18/8 composition for enhanced resistance to pitting and crevice corrosion in chloride environments. SS 310 is a high-chromium, high-nickel austenitic grade engineered for extreme heat resistance up to 1150°C, widely used in furnace components and heat treatment equipment.
Duplex & Super Duplex
Duplex stainless steel combines austenitic and ferritic microstructure, delivering approximately twice the yield strength of standard austenitic grades alongside excellent stress corrosion cracking resistance. Super duplex grades such as Zeron offer higher alloy content with a PREN above 40, providing performance in the most aggressive seawater and chemical environments.
SMO 254 & AL6XN
Highly alloyed austenitic grades with elevated molybdenum (6%) and nitrogen content, designed specifically for seawater and chloride-intensive applications where standard 316-type grades fail. Both SMO 254 and AL6XN are specified for desalination equipment, marine heat exchangers, and offshore chemical injection systems.
Foundry Grades (Ni, Cr, Mo)
Foundry nickel, chromium, and molybdenum are used as alloying additions in stainless steel production and re-melting operations. These materials are essential inputs for steelmakers adjusting alloy chemistry during the melting process, and represent a key part of ABCOM's trading activity across stainless and specialty steel supply chains.
HYMU13 & Others
HYMU13 and other specialised stainless steel grades are supplied for specific magnetic and mechanical property requirements, including applications in scientific instrumentation, defence, and precision engineering where standard corrosion-resistant grades do not meet the full specification.
Our Capabilities
Processing & Recycling
ABCOM processes stainless steel scrap sourced from chemical plant decommissioning, marine and offshore equipment retirement, and industrial manufacturing. These streams yield material ranging from standard SS 316 turnings and offcuts to high-value duplex and SMO 254 components from process plant shutdowns.
Stainless scrap recovery is economically significant due to the nickel and molybdenum content in higher alloy grades. A tonne of super duplex or SMO 254 scrap carries substantially more recoverable alloy value than standard austenitic material — accurate grading is essential to realising this value. Our team sorts and classifies incoming material by alloy family: austenitic, duplex, super duplex, and high alloy.
Quality control and traceability are applied across all processing stages. Each lot is documented from origin through to dispatch, supporting the compliance requirements of stainless steel producers and fabricators receiving the material. Learn more about our operations on the about page.
Processing Capabilities
- Alloy identification and compositional grading
- Sorting by grade family: austenitic, duplex, super duplex, high alloy
- Scrap processing from chemical, marine, and industrial decommissioning
- Recovery of SS 316, duplex and SMO 254 scrap streams
- Quality control and lot documentation
- Global sourcing and procurement across established supply networks
- Export preparation and international logistics coordination
Trading Network
Global Supply from Singapore
Singapore's position as a global trading and logistics hub gives ABCOM direct access to stainless steel flows across Asia-Pacific, the Middle East, Europe, and the Americas. Our Singapore operations serve as the central point for trading activity, with established networks across the key stainless producing and consuming regions.
Export markets for our stainless steel material include stainless steel producers, specialty re-melters, and chemical plant fabricators across more than 30 countries. Buyers range from electric arc furnace operators requiring high-quality scrap for alloy adjustment to fabricators sourcing specific grades for new construction projects.
For sourcing inquiries, logistics discussions, or pricing on specific stainless steel grades, contact our Singapore office directly via the contact page.
Why Choose ABCOM
Specialist Expertise, Global Reach
25+ Years Experience
Established in Singapore in 2000, ABCOM has operated through multiple commodity cycles with consistent focus on specialty non-ferrous and stainless steel alloys.
International Operations
Offices in Singapore and Turkey, with active trading relationships across Europe, Asia, and the Americas.
Alloy Expertise
Deep technical knowledge of chromium, nickel, molybdenum, and nitrogen alloy families — from identification and grading through to final sale.
Sustainable Recycling
Recovering nickel, molybdenum, and chromium from stainless scrap reduces primary mining demand and supports circular supply chains in the steel industry.
Common Questions
Frequently Asked Questions
What are stainless steel alloys used for?
Stainless steel alloys are used wherever corrosion resistance is critical — including chemical processing equipment, marine and offshore structures, oil and gas pipelines, food and pharmaceutical processing, desalination plants, and industrial pressure vessels. Higher alloy grades such as duplex and SMO 254 extend performance into the most aggressive chloride and acid environments.
What is the difference between duplex and super duplex stainless steel?
Duplex stainless steel has a mixed austenitic-ferritic microstructure, offering higher strength than standard austenitic grades and good resistance to stress corrosion cracking. Super duplex grades contain higher levels of chromium, molybdenum, and nitrogen, giving them a Pitting Resistance Equivalent Number (PREN) above 40 — making them suitable for the most aggressive seawater and chemical environments where standard duplex grades may be insufficient.
Why is SMO 254 used in marine applications?
SMO 254 is a highly alloyed austenitic stainless steel containing 6% molybdenum and elevated nitrogen content. This composition gives it exceptional resistance to pitting and crevice corrosion in chloride-rich environments such as seawater, brackish water, and bleach solutions. It is specified for seawater handling systems, desalination equipment, and offshore platform components where standard 316-type grades would fail.
What industries use high-alloy stainless steels?
High-alloy stainless steels — including duplex, super duplex, and 6% molybdenum grades — are used in chemical processing, oil and gas, marine and offshore, desalination, pulp and paper, and pharmaceutical manufacturing. These industries require materials that combine corrosion resistance with mechanical strength in environments that standard austenitic grades cannot handle reliably.
What is stainless steel recycling?
Stainless steel recycling involves collecting, sorting, and processing stainless steel scrap back into usable raw material. Stainless scrap — particularly from duplex, super duplex, and high-alloy grades — is valuable due to its nickel, molybdenum, and chromium content. ABCOM specialises in grading and processing these scrap streams from chemical, marine, and industrial decommissioning for re-entry into stainless steel production.
Source or Sell Stainless Steel Alloys
Contact ABCOM for pricing, logistics, or technical discussions on duplex, super duplex, and high-alloy stainless steel alloy grades. We work with buyers and sellers across 30+ countries.