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Competence

Specialist in high grade alloys for petrochemical applications

Proprietaries of Alloy Grades RÉFRALLOY®

Yantai Refra Heat Resistant Alloys Co., Ltd. specializes in developing new heat resistant alloys, through extensive high-temperature tensile and creep testing, the company accurately generates Larson-Miller curves for various alloys. It collaborates with leading independent laboratories in Europe and China to conduct regular product validations, ensuring reliable performance and advancing heat resistant material innovation.

Alloy
Composition Cr/Ni 
Max operating Limit(℃)
Applications
Main Features
RÉFRALLOY 32L
20/32 LC
1000
Parts Outside the Furnace
 □Goodcreep strength
□High thermal shock resistance
□Good ductility after ageing
Reformer Furnace Manifolds,
Transfer Lines
RÉFRALLOY 35M
25/35 MA
1100
Reforming & Cracking
 □High creep resistance
□Improved carburization and oxidation
resistance
RÉFRALLOY 35M-R
25/35 MA
1100
Reforming,
DRI
 □Superior creep resistance,
□carburization and oxidation resistance
RÉFRALLOY 35L
25/35 LC
1080
Parts Inside the Furnace
 □Similar properties to 32L with higher
carburization and oxidation resistance
RÉFRALLOY 45M
35/ 45 MA
1200
Cracking
(For High carburizing and metal
dusting atmospheres)
 □Superior carburization and oxidation
resistance
□High creep strength
RÉFRALLOY 45LM
35 / 45 LC MA
1200
DRI Convection Section,
Transfer Lines
 □Similar properties to 32L with 45M with
higher thermal shock resistance
RÉFRALLOY 45A
25/45 Al
1200
Cracking
(For High carburizing and metal
dusting atmospheres)
 □Superior carburization and oxidation
resistance
□High creep strength
RÉFRALLOY 48W
28/48W
1200
DRI, Coil support,
Furnace hardware
 □High creep resistance
□Superior oxidation resistance
RÉFRALLOY 60A-D
25/60 Al
1200
DRI
 □High creep resistance
□Superior oxidation resistance

RÉFRALLOY 45 A

RÉFRALLOY 45A is a cast aluminum-added alloy containing 24% Chromium,45% Nickel, Aluminum, and trace elements. It was specifically developed to resist coke formation and carburization issues commonly encountered in steam-cracking processes for ethylene production It is characterized by the following features:
- High resistance to carburization and oxidation
- Excellent creep properties
- Acceptable weldability, even in aged conditions

RÉFRALLOY 60 A-D

 RÉFRALLOY 60 A-D is a cast austenite alloy with 26% Chromium, 60% Nickel, Aluminum and other elements. It is characterized by the following features:
- Excellent high temperature creep resistance
- Excellent high temperature oxidation resistance
- Maximum operation temperature up to 1200℃

By adding the Al element, a continuous and dense Al₂O₃ oxide film with high thermal stability,with a working temperature as high as 1200℃. It significantly improves the catalytic efficiency and capacity during the reduction process, reduces energy consumption and extends the service life of the DRI furnace tube.