​TD305B, developed and produced by TICO, is a new type of heat-resistant stainless steel. Its high-temperature mechanical properties are [SCALE STEEL]comparable to 310S and the cost is lower, so it can be used as a substitute material for 310S.

Alloy Principle
Traditional heat resistant stainless steel is mainly the use of stainless steel chromium, nickel and other elements in the reaction with oxygen at high temperature, generated spinel structure (FeCr2O4, NiCr2O4) and other protective [SCALE STEEL]oxide film, and achieve the purpose of high temperature oxidation resistance.The high temperature resistance of stainless steel can be improved by increasing the content of chromium and nickel.
TD305B is a type of section nickel steel, steel added with higher content of silicon, silicon can significantly improve the oxidation resistance of chromium steel, so although the content of nickel and chromium is lower, but still has the same as 310S and higher high temperature mechanical properties.

Chemical Composition(%)
Grade TD305B 310S
C 0.05 0.05
Si 3.30 0.60
Mn 0.80 0.80
P 0.026[SCALE STEEL] 0.025
S 0.003 0.003
Cr 19.50 24.60
Ni 13.30 19.10
N 0.05 0.05

Applications
The high temperature mechanical properties of TD305B are similar to those of 310S, and the high temperature oxidation resistance is stronger.It can be widely used in blast furnace flue gas recovery or cooling equipment, hot blast stove flue gas recovery device for iron and steel industry;Thermal power boiler rear [SCALE STEEL]superheater, preheater;High temperature exhaust gas utilization device of combustion turbine;Chemical combustion furnace, incinerator gas preheater and other fields.

10CrMoAl is a kind of low alloy steel with seawater corrosion resistance, and the corrosion resistance of 10CrMoAl is about twice that [SCALE STEEL]of A3 steel.


Chemical Composition(%)（GB/T 30070-2013）
C 0.07~0.12 Cr 0.80~1.20
Si 0.20~0.50 Mo 0.20~0.35
Mn 0.30~0.60 Al 0.40~0.80
P ≤0.030[SCALE STEEL] S ≤0.030

Theory for Alloys
(1) Al in the material can react with O in the air to form Al2O3 protective film, which is anticorrosive and corrosion resistant.
②Cr and Mo ions in seawater can automatically supplement the gap formed by Cl- ions on steel pitting corrosion, forming a dense [SCALE STEEL]protective layer, preventing the pitting corrosion from developing to depth, so as to achieve the effect of corrosion resistance and prolong service life.

Applications
10CrMoAl steel has the characteristics of relatively simple production process, good comprehensive mechanical properties [SCALE STEEL]and welding properties, and corrosion resistance to sea water. It is the most ideal pipeline and processing material for conveying water, oil and gas and medium containing sea water in coastal power plants, coastal oil fields, coastal natural gas and petrochemical plants.

​C-276 alloy is the first forged nickel-based alloy used to alleviate welding problems. It is currently one of the most corrosion resistant alloys in the world, with a wide [SCALE STEEL]range of corrosion resistance in a variety of highly corrosive media and a density of 8.89g/cm³.

Standards:
CHINA GB/T 15007-2008 NS3304（NS334）
AMERICA ASTM B574-2006 Alloy N10276
GERMANY DIN 17744:2002 NiMo16Cr15W
2.4819
JAPAN JIS H4551-2000[SCALE STEEL] NW0276

Chemical Composition:
Grade NS3304 N10276 2.4819 NW0276
C ≤0.020 ≤0.010 ≤0.010 ≤0.010
Si ≤0.08 ≤0.08 ≤0.08 ≤0.08
Mn ≤1.00 ≤1.00 ≤1.00 ≤1.00
P ≤0.040 ≤0.040 ≤0.040 ≤0.020
S ≤0.030 ≤0.030 ≤0.030 ≤0.015
Cr 14.5~16.5 14.5~16.5 14.5~16.5 14.5~16.5
Ni rest rem. rest Other
Mo 15.0~17.0 15.0~17.0 15.0~17.0 15.0~17.0
Fe 4.0~7.0 4.0~7.0 4.0~7.0 4.0~7.0
W 3.0~4.5 3.0~4.5[SCALE STEEL] 3.0~4.5 3.0~4.5
Co ≤2.50 ≤2.50 ≤2.50 ≤2.50
V ≤0.35 ≤0.35 ≤0.35 ≤0.35
Cu -- -- -- ≤0.50

Grades:
AMERICA Haynes International HASTELLOY® C-276
Special Metals INCONEL® Alloy C-276
GERMANY VDM Metals[SCALE STEEL] VDM® Alloy C-276
Nicrofer 5716 hMoW
JAPAN NIPPON YAKIN NAS NW276
SWEDEN SANDVIK Sanicro 56Mo

Material Characteristics:
① High chromium molybdenum content, can withstand oxidation and non-oxidation acid, and has excellent resistance to pitting and crack erosion in the presence of chloride and other halides.For example, in many harsh corrosive environments, including sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, hypochlorite, [SCALE STEEL]wet chlorine, etc., it has good corrosion resistance to uniform corrosion, stress corrosion cracking, pitting and crevice corrosion;Strong resistance to sulfide stress cracking and stress corrosion cracking in acidic oilfield environment.
② Low carbon content can reduce the carbide precipitation during welding, so as to ensure the intergranular corrosion resistance in the heat-affected zone of welded joints.

Applications:
Because of its excellent overall corrosion resistance, C276 is generally considered to be a versatile corrosion resistant nickel-based alloy with [SCALE STEEL]wide applications in the chemical, petrochemical and petroleum industries.Applications include chemical applications for a variety of production purposes, power plant flue gas desulfurization (FGD) systems, and acid oil field environments.

​Alloy28(UNS N08028) is an ultra-low carbon Fe-Ni base corrosion resistant alloy with a density of 8.0g/cm3.According to the naming method of metal materials in [SCALE STEEL]China, the grade of this alloy is 00Cr27Ni31Mo3Cu.
Standards:
AMERICA ASTM B668
ASTM B709 UNS N08028
GERMANY DIN EN 10088-1 1.4563

Chemical Composition:
Grade N08028 1.4563
C ≤0.030 ≤0.020
Si ≤1.00[SCALE STEEL] ≤0.70
Mn ≤2.50 ≤2.00
P ≤0.030 ≤0.030
S ≤0.030 ≤0.010
Cr 26.0~28.0 26.0~28.0
Ni 29.5~32.5 30.0~32.0
Mo 3.0~4.0 3.0~4.0
Cu 0.60~1.40 0.70~1.50
N -- ≤0.11
Fe rest rest

Grades:
Special Metals INCOLOY® alloy 028
Sandvik SANICRO 28

Material Characteristics:
1.It has good corrosion resistance in strong acid environment.
2.It has good stress corrosion cracking resistance [SCALE STEEL]in hydrogen sulfide (H2S) and chloride environment.
3.Good intergranular corrosion resistance.
4.High resistance to pitting and crevice corrosion.
5.Good weldability.

Applications:
Alloy28 early is developed to solve the wet-process phosphoric acid heat exchanger material alloy, corrosion resistant performance is very superior, to [SCALE STEEL]H2S, chloride, phosphoric acid and sulfuric acid corrosion resistance, high H2S content in the oil and gas exploitation, flue gas desulfurization system, papermaking industry, phosphoric acid and organic acid and ester synthesis production device has a large number of applications and performances.

​633 Stainless Steel is precipitated hardened stainless steel, can be subjected to low temperature heat treatment to obtain different levels of strength, [SCALE STEEL]for high strength and excellent weldability and corrosion resistance occasions.

Standard:
CHINA GB/T 20878-2007 09Cr17Ni5Mo3N
S51750
AMERICA ASTM A693-2003 S35000，633
EUROPE EN 10088-1:2005[SCALE STEEL] (1.4457)

Chemical Composition(%):
C 0.07~0.11 Cr 16.0~17.0 Ni 4.00~5.00
Si ≤0.50 P ≤0.040 Mo 2.50~3.20
Mn 0.50~1.25 S ≤0.030[SCALE STEEL] N 0.07~0.13

Grades:
AMERICA ATI Metals AM 350®
JAPAN TOKKIN TOKKIN® 350

Material Characteristics:
The corrosion resistance of martensitic stainless steels is better than that of other martensitic stainless steels which can be quenched and hardened. [SCALE STEEL]In most media, the corrosion resistance of martensitic stainless steels is comparable to that of 316 type stainless steels.
② High strength.After heat treatment according to national standard specification, hardness ≥36HRC or ≥42HRC can be obtained.
③ It is easier to weld than other stainless steels that can be precipitated and hardened. It can be welded by traditional inert gas method.

Applications
633Stainless Steel is commonly used in applications up to 1000°F (537 ° C) where strength and good corrosion resistance are required, such as [SCALE STEEL]gas turbine compressor components (blades, plates, rotors and shafts), and similar components requiring high strength at room and moderate temperatures;Precision seals, couplings for semiconductor processing equipment and high vacuum systems;Aerospace applications requiring high strength edge welded bellows, etc.

04Cr13Ni5Mo, also known as 0Cr13Ni5Mo (no standard), is a typical type of super martensitic stainless steel."Super martensitic stainless steel" is [SCALE STEEL]made of martensitic stainless steel with improved smelting process, reduced carbon content and increased nickel-molybdenum alloy element. Its performance is better than that of conventional martensitic stainless steel.

Standards:
CHINA GB/T 20878-2007
GB/T 4237-2015 04Cr13Ni5Mo
S41595
AMERICA ASTM A182-10a F6NM，S41500
JAPAN JIS G 3214:2009 SUS F6NM[SCALE STEEL]
JIS G 5121:2003 SCS6
GERMANY DIN EN 10088-2:2005 X3CrNiMo13-4
1.4313

Chemical Composition:
Grade 04Cr13Ni5Mo
F6NM,SUSF6NM SCS6 1.4313
C ≤0.05 ≤0.06 ≤0.05
Si ≤0.60[SCALE STEEL] ≤1.0 ≤0.70
Mn 0.50~1.00 ≤1.0 ≤1.50
P ≤0.030 ≤0.040 ≤0.040
S ≤0.030 ≤0.030 ≤0.015
Cr 11.5~14.0 11.5~14.0 12.0~14.0
Ni 3.5~5.5 3.5~4.5 3.5~4.5
Mo 0.5~1.0 0.4~1.0 0.3~0.7
N -- -- ≥0.02
 
Performance And Application:
Super martensitic stainless steel not only has good corrosion resistance, weldability, but also has the characteristics of high strength and good[SCALE STEEL] low temperature toughness. It has great application potential in the fields of hydropower, mining equipment, chemical equipment, food industry, transportation and high-temperature pulp production equipment.As a typical type of super martensitic stainless steel, 04Cr13Ni5Mo is usually used as hydropower steel, is a conventional material for hydraulic turbine equipment.