Designation

Nearest Related Specification

Description

ALLOY C-276

ASTM B-574, 575, 619, 622, 626

Outstanding resistance to a variety of environments, including strong oxidisers, hot contaminated mineral acids, wet or dry chlorine contaminated media, acetic anhydride and sodium chloride solutions.

NICKEL 200

ASTM B160-3, BS3072: NA11

Commercial wrought nickel; good mech. props; excel.resistance to many corrosion environments including foods, synthetic fibres and alkalis.

MONEL*
ALLOY 400

ASTM B127, 163-165, BS3072-6: NA13

Good resistance to corrosion by sea water, dilute sulphuric, chemical, steam and petroleum plant, marine and pickling equipment.

MONEL*
ALLOY K-500

BS3072-6: NA18 QQ-N-286D

Similar corrosion resistance to Monel Alloy 400, but amenable to precipitation-hardening to give high strength. For propeller and pump shafts, bolts, doctor blades and valves.

INCONEL*
ALLOY 600

ASTM-B163, 166, 168, BS 3072-6: NA14

Combines excellent high temp strength with resistance to oxidising, carburising, nitriding and reducing atmospheres.

INCONEL*
ALLOY 601

Improved alloy where maximum high temp strength and oxidation resistance required. Good sulphidation and carburising resistance.

INCONEL*
ALLOY 625

ASTM B443,444,446

For wet corrosive, high temp and cyrogenic service. High resistance to range of corrosive solutions including acids, salts and sea water where pitting, crevice or stress cracking may occur. Excellent for overlay and dissimilar metal welds.

INCOLOY*
ALLOY DS

BS 3072-6: NA17

A general purpose heat-resisting alloy with particular resistance to carburisation and alternating carburisation and oxidation. For furnace parts, heat-treatment and vitreous enamelling equipment.

INCOLOY*
ALLOYS
800 & 800H

ASTM B163, 407-9, BS 3072-16: NA15

Resistant to chloride-ion stress-corrosion cracking, excellent high temperature strength and immunity to Sigma phase formation. Widely used for petrochemical and high temperature process equipment.

INCOLOY*
ALLOY 825

ASTM BI63, B423-5, BS 3072-6: NA16

Developed for use in aggressive corrosive environments. Exceptional resistance to corrosion by acids and alkalis in reducing or oxidising conditions. It is resistant to stress corrosion cracking and pitting and used for chemical plant and pickling plant.

DUPLEX STAINLESS
STEEL 2507

ASTM A240, A47 9, A959

2507 is a duplex stainless steel with very high strength. It has very high resistance to uniform corrosion, pitting and crevice corrosion and to stress corrosion cracking.

AUSTENITIC STAINLESS STEEL 310 (S31000)

ASTM A240

A heat resistant austenitic stainless steel with better scaling resistance than standard grades. Usable to 1035°C in intermittent service, 1150°C in continuous service

AUSTENITIC STAINLESS STEEL 253MA (S30815)

ASTM A240

253 MA is microalloyed with rare earth metals (REM) for excellent heat resistance. Best used at 850-1100°C. Can become brittle at room temperature after service at 600-850°C.

AUSTENITIC STAINLESS STEEL 254SMO (S31254)

ASTM A240

Highly corrosion resistant austenitic stainless steel containing 6% molybdenum, plus copper. Pitting resistance equivalent =43.

ALLOY 31
(N08031)

ASTM B625, B462, B649, B366, B626

An advanced super-austenitic, high-chromium 6% moybdenum corrosion resisting alloy. Bridges the cost/performance gap between Ni-Cr-Mo alloys and 300 series stainless steels. Is used in the chemical process and petrochemical industries.