14CrMnNi2MoA is a kind of low alloy high [SCALE STEEL]strength structural steels.
BAR GJB 1951-1994
《Specification for high quality structural steel bars for aviation use》
FORGE PIECE HB 5024-1989
《Steel forgings for aviation》[SCALE STEEL]
Component Specification（GJB 1951-1994）
C Cr Ni Mo
0.11~0.17 1.20~1.60 1.40~2.00 0.20~0.40
Si Mn[SCALE STEEL] P S
0.35~0.65 0.65~0.95 ≤0.025 ≤0.015
Heat Treatment And Mechanics（GJB 1951-1994）
Dimensions of sample hairs（mm） 16
Heat treatment （℃） Quenching (oil cooling) 820~860
Tempering (air cooling) 180~220
Mechanical property Specified non-proportionality
Extension strength MPa ≥1080
yield MPa[SCALE STEEL] ≥885
Percentage elongation after fracture % ≥12
Percentagereduction of area; reduction of area % ≥55
Impact absorption work J ≥78
Hardness HBS Annealing or high tempering ≤255
Quenching + tempering 321~415
Performance and Application：
14CrMnsNi2MoA is a kind of excellent carburizing steel, which has good hardenability, high strength and impact toughness, good thermal stability, high bending fatigue strength and low notch sensitivity.After carburizing and[SCALE STEEL] quenching and low temperature tempering, the surface has a high hardness, and the heart has good strength and toughness.Medium performance in cutting and cold deformation.It is suitable for the manufacture of heavy duty and high speed transmission gear, shaft and other parts requiring surface carburizing.
HC420LA is German standard, material number is 1.0556. It is a kind of low alloy high strength steel requiring high yield strength. [SCALE STEEL]The product form is cold rolled coil.
Component Specification（DIN EN 10268-2013）
C ≤0.14 Al ≥0.015
Si ≤0.5 Ti ≤0.15
Mn ≤1.6 Nb ≤0.09
P ≤0.030[SCALE STEEL] S ≤0.025
item transverse longitudinal test piece
yield strength Rp0.2 420~520 390~500
strength of extensionRm 470~600 460~580
elongation %[SCALE STEEL] ≥17 ≥18
HC420LA has good comprehensive performance. It is mainly used to manufacture auto parts, such as chassis, internal panel,[SCALE STEEL] seat parts, etc. The processing method is cold forming.
Gr.8 is 9Ni type low carbon quenching and tempering steel, listed in the American standard of low temperature pipe A333 and low temperature heat exchanger pipe A334 two standards.Nickel is the most effective element to improve the low temperature toughness of steel -- GR.8 contains 9% Ni, which ensures its good toughness and[SCALE STEEL] high strength at very low temperature, and its service temperature can be as low as -195℃.
CHINA GB/T 18984-2016 06Ni9DG
AMERICA ASTM A333/A333M-11
ASTM A334/A334M-04a[SCALE STEEL] Grade 8
JAPAN JIS G 3460:2013
JIS G 3464:2013 STPL 690
GERMANY DIN EN 10216-4:2004 X10Ni9
GRADE Grade 8 06Ni9DG STPL 690 1.5682
C ≤0.13 ≤0.10 ≤0.13 ≤0.13
Si 0.13~0.32 0.10~0.35 0.10~0.35 0.15~0.35
Mn ≤0.90 ≤0.90[SCALE STEEL] ≤0.90 0.30~0.80
P ≤0.025 ≤0.015 ≤0.030 ≤0.020
S ≤0.025 ≤0.008 ≤0.030 ≤0.010
Ni 8.4~9.6 8.5~9.5 8.5~9.5 8.5~9.5
Mo -- -- -- ≤0.10
Cu -- -- -- ≤0.30
V -- -- -- ≤0.05
Gr.8 Heat treated to control the microstructure as follows before delivery.
① quenching + tempering
Heat evenly to 800℃±15℃;Heat preservation, the heat preservation time is proportional to the thickness of 2min/mm, and not less than 15min;Immerse in circulating water and quench.
The steel tubes were reheated evenly[SCALE STEEL] to 565-605 ℃;Heat preservation, the heat preservation time is proportional to the thickness of 2min/mm, and not less than 15min;Air cooling, or water quenching with a cooling rate of not less than 165℃/h.
(2) secondary normalizing + tempering
Heat evenly to 900℃±15℃;Heat preservation, the heat preservation time is proportional to the thickness of 2min/mm, and not less than [SCALE STEEL]15min;Air cooling.
Reheated to 790℃±15℃;Heat preservation, the heat preservation time is proportional to the thickness of 2min/mm, and not less than 15min;Then air cooling.
Heat evenly to 565-605 ℃;Heat preservation, the heat preservation time is proportional to the thickness of 2min/mm, and not less than 15min;Air cooling, or water quenching with a cooling rate of not less than 165℃/h.
strength of extension MPa ≥690
yield strength MPa ≥515
Elongation (longitudinal) % ≥22a
A. Longitudinal strip test with a standard distance of 50mm and a wall thickness of ≥8mm, or all small-size samples tested with full section.
B. Standard round sample with a standard distance of 50mm or a smaller size sample with a standard distance of 4 times the diameter.
The minimum impact test temperature of the steel tube GR.8 is -195℃.The test results are determined by the average lateral expansion value of the impact sample relative to the notch.
GR.8 is primarily used for the storage of structural materials for liquefied natural gas (LNG) terminals.LNG is stored at around -162 ° C and must be made from ultra-low temperature materials.Compared with other ultra-low temperature materials, GR.8 has lower cost than stainless steel and nickel-based alloy, higher strength than aluminum alloy and better low temperature toughness, and is currently the main material for large LNG storage tanks.
GH3536 is a nickel-based superalloy with high iron content, mainly reinforced by solid solution of chromium and molybdenum, with a density [SCALE STEEL]of 8.3g/cm3.The most well-known commercial grade of the same steel is Hastelloy ® X Alloy.
CHINA GB/T 14992-2005 GH3536(GH536)
AMERICA ASTM B572-2011 UNS N06002
HAYNES HASTELLOY® X alloy
JAPAN JIS H 4551-2000 NW6002
NIPPON YAKIN NAS HX
GERMANY DIN 17744-2002 2.4665
VDM Metals[SCALE STEEL] Nicrofer®4722 Co
GRADE GH3536 N06002 NW6002 2.4665
C 0.05~0.15 0.05~0.15 0.05~0.15 0.05~0.15
Si ≤1.00 ≤1.00 ≤1.00 ≤1.00
Mn ≤1.00 ≤1.00 ≤1.00 ≤1.00
P ≤0.025 ≤0.040 ≤0.040 ≤0.020
S ≤0.015 ≤0.030 ≤0.030 ≤0.015
Ni -- Remainder[SCALE STEEL] -- Other
Cr 20.5~23.0 20.5~23.0 20.5~23.0 20.5~23.0
Mo 8.0~10.0 8.0~10.0 8.0~10.0 8.0~10.0
Fe 17.0~20.0 17.0~20.0 17.0~20.0 17.0~20.0
Co 0.5~2.5 0.5~2.5 0.5~2.5 0.5~2.5
W 0.2~1.0 0.2~1.0 0.2~1.0 0.2~1.0
Al ≤0.50 -- -- ≤0.50
Ti ≤0.15 -- -- --
Cu ≤0.50 -- -- ≤0.50
B ≤0.01 -- ≤0.01 ≤0.01
GH3536 alloy under the high temperature of 1200 ℃, still has a very high strength and oxidation resistance, combined with excellent forming and welding performance, and excellent resistance to stress corrosion cracking performance, is widely used in gas turbine, industrial furnace, heat treatment equipment and the process of [SCALE STEEL]nuclear components, such as gas turbine combustion cylinder, burner taper pipe, transition, spray rod, distillation and the chemical industry, muffle furnace, catalyst support grille, hearth baffle, pyrolysis operation and flash drier parts of pipes, etc.
GH1139, original GH139, also expressed as 12 cr25ni16mn7nb, brand comes from the former Soviet union Э И 835, is a veteran of austenite[SCALE STEEL] steel body is strong, its density is 7.83 g/cm3, main products for the sheet and rod form.
Component Specification（GB/T 14992-2005）
C ≤0.12 Cr 23.00~26.00 Ni 15.00~18.00
Si ≤1.00 P ≤0.035 N 0.30~0.45
Mn 5.00~7.00 S ≤0.020[SCALE STEEL] B ≤0.010
The performance level of GH1139 alloy is similar to that of GH3030 alloy. It has the characteristics of good hot working plasticity, stable structure [SCALE STEEL] and friendly welding. It is suitable for making high-temperature bearing parts such as combustion chamber after stamping and welding, such as gas conduit parts made of thin plate, strip and profile working at 800~950℃ and medium stress.
Hastelloy C-22 alloy is a general Ni-Cr-Mo alloy with a density of 8.7g/cm3.Compared with the common Ni-Cr-Mo alloy, such as C-276, C-4, [SCALE STEEL]625 alloy, it has better and more comprehensive corrosion resistance.
CHINA GB/T 15007-2008 NS3308
AMERICA ASTM B462-2006
ASTM B575-2006 N06022
Special Metals INCONEL® alloy 22
Haynes International HASTELLOY® C-22®
JAPAN JIS H 4551:2000 NW6022
Nippon Yakin[SCALE STEEL] NAS NW22
GERMANY DIN 17744:2002 NiCr21Mo14W
VDM Metals VDM® Alloy 22
Nicrofer® 5621 hMoW
GRADE NS3308 N06022 NW6022 2.4602
C ≤0.015 ≤0.015 ≤0.015 ≤0.010
Si ≤0.08 ≤0.08[SCALE STEEL] ≤0.08 ≤0.08
Mn ≤0.50 ≤0.50 ≤0.50 ≤0.50
P ≤0.020 ≤0.020 ≤0.025 ≤0.025
S ≤0.020 ≤0.020 ≤0.020 ≤0.015
Ni --- Remainder --- Other
Cr 20.0~22.5 20.0~22.5 20.0~22.5 20.0~22.5
Mo 12.5~14.5 12.5~14.5 12.5~14.5 12.5~14.5
Fe 2.0~6.0 2.0~6.0 2.0~6.0 2.0~6.0
W 2.5~3.5 2.5~3.5 2.5~3.5 2.5~3.5
Co ≤2.50 ≤2.50 ≤2.50 ≤2.50
V ≤0.35 ≤0.35 ≤0.35 ≤0.35
(1) Excellent resistance to various corrosive media under oxidation and reduction conditions;It is one of the few materials that can resist the corrosion of moist chlorine gas, hypochlorite and chlorine dioxide solution, and has[SCALE STEEL] significant corrosion resistance to high concentration of salt chloride solution (such as ferric chloride and copper chloride).
(2) It can also resist a variety of corrosive [SCALE STEEL]environments at a high temperature of up to 677℃.
(3)Good resistance to pitting corrosion, crevice corrosion and stress corrosion cracking.
(4) Excellent welding performance.
Hastelloy C-22 alloy has been widely used in chemical and petrochemical fields, such as the application in the contact with chloride-containing organic components and catalytic systems.This material is especially suitable for high temperature, mixed with impurities of inorganic acids and organic acids (such as formic acid and acetic acid), sea water corrosion environment.
C14415 is a copper alloy with a small amount of tin element added. Its electrical conductivity is close to that of pure copper, but it has better mechanical [SCALE STEEL]properties.C14415 and C19210 have the same material characteristics, can be used interchangeably.
CHINA GB/T 2061-2013 TSn0.12，C14415
AMERICA ASTM，CDA UNS C14415
JAPAN JIS H 3100:2012[SCALE STEEL] C1441
GERMANY DIN CEN-TS 13388-2008 CuSn0.15，CW117C
C14415 C1441 CuSn0.15
Cu ≥99.96* Rest Rest
Sn 0.10~0.15 0.10~0.20 0.10~0.15
Pb -- ≤0.03 --
Fe -- ≤0.02 ≤0.02
Zn -- ≤0.10 ≤0.10
P —[SCALE STEEL] 0.001~0.020 ≤0.015
Ni -- -- ≤0.02
OTHER -- -- ≤0.10
*：The value includes (Cu+Ag+Sn)
Physical Properties (20℃)
DENSITY 8.9 g/cm3
ELECTRIC CONDUCTIVITY 85 %IACS
CONDUCTIVITY 49.30 MS/m
HEAT CONDUCTIVITY[SCALE STEEL] 350 W/（m·K）
COEFFICIENT OF THERMAL EXPANSION 17.7 10-6/K
ELASTICITY MODULIS 128 GPa
SPECIFIC HEAT 0.385 J/（g·K）
POISSON RATIO 0.34 --
Cold workability GOOD
machinability[SCALE STEEL] GENERAL
Electroplating sex FINE
Hot dip plating FINE
Soft soldering FINE
The product form of C14415 is mainly [SCALE STEEL]strip, which is widely used in lead frame of transistor (power integrated circuit chip), car water tank, refrigerated heat sink and switch socket, etc.
Alloy20 is an austenitic Ni-Fe-Cr based [SCALE STEEL]superalloy, which can be regarded as both stainless steel and nickel based alloy.
CHINA GB/T 15007
YB/T 5354 NS1403（NS143）
AMERICA Special Metals INCOLOY® alloy 020
CARPENTER CarTech® 20Cb-3®
ASTM B468[SCALE STEEL] UNS N08020
ASTM A182 F20（forge）
GERMANY VDM Metals Nicrofer ® 3620 Nb
DIN 17753 NiCr20CuMo
GRADE NS1403 N08020 2.4660
C ≤0.07 ≤0.07 ≤0.07
Si ≤1.00 ≤1.00 ≤1.00
Mn ≤2.00 ≤2.00 ≤2.00
P ≤0.030 ≤0.045 ≤0.025
S ≤0.030 ≤0.035 ≤0.015
Ni 32.0~38.0 32.0~38.0 32.0~38.0
Cr 19.0~21.0[SCALE STEEL] 19.0~21.0 19.0~21.0
Mo 2.0~3.0 2.0~3.0 2.0~3.0
Cu 3.0~4.0 3.0~4.0 3.0~4.0
Nb 8×C~1.0 Nb+Ta:
Co -- -- ≤1.5
Fe -- Remainder Other
(1) In chemicals containing [SCALE STEEL]chloride, sulfuric acid, phosphoric acid and nitric acid, it has excellent ability to resist overall corrosion, intergranular corrosion, pitting and crevit corrosion.Corrosion resistance between 316L and Hastelloy alloy.Corrosion resistance is less than 316L in some amine facilities because of the tendency to form nickel-ammonium complex compounds.
(2) The extremely low carbon content, plus niobium element helps to reduce the precipitation of carbide in the heat-affected [SCALE STEEL]zone, so it can be used in the welding state in most cases.All the common welding methods can be used successfully except oxy-acetylene.
(3) good cold forming, can be twice the radius of the material thickness of the bending, as well as tensile pressing molding operations.
(4) It also has excellent [SCALE STEEL]mechanical properties in the environment of up to 500℃.
Alloy 20 was first developed in 1951 for use in sulphuric acid and is the preferred alloy for sulphuric acid industry environments.It exhibits excellent stress corrosion cracking resistance in 20% ~ 40% boiling sulfuric acid.Because of its extraordinary corrosion resistance, the 20 alloy is now a popular choice in many [SCALE STEEL]industries such as chemical, food, pharmaceutical and plastics, and is used as a high temperature alloy in heat exchangers, mixing tanks, metal cleaning and pickling equipment, and pipes.
Al-6XN is a super austenitic stainless steel developed and produced by Allegheny Technologies in the United States, with a density of [SCALE STEEL]8.06g/cm3.The composition of Al-6XN is similar to that of 926 alloy.
GRADE AL-6XN Alloy 926
UNS N08367 N08926
C ≤0.030 ≤0.020
Si ≤1.00[SCALE STEEL] ≤0.50
Mn ≤2.00 ≤2.00
P ≤0.040 ≤0.030
S ≤0.030 ≤0.010
Ni 23.50~25.50 24.00~26.00
Cr 20.00~22.00 19.00~21.00
Mo 6.0~7.0 6.0~7.0
Cu ≤0.75 0.5~1.5
N 0.18~0.25 0.15~0.25
(1) The high ratio of Cr, Mo, Ni and N alloy has good resistance to pitting corrosion, crack corrosion, intergranular corrosion and stress corrosion in various acidic corrosive environments containing chloride ions. The [SCALE STEEL]comprehensive corrosion resistance is better than 316L, which is close to nickel-based alloy.
(2) Good mechanical properties, compared with the conventional austenitic stainless steel such as 304,316,317, has a higher tensile [SCALE STEEL]strength, while maintaining excellent material toughness and impact strength.
(3) Excellent welding performance, easy to manufacture and install on site.
Al-6XN alloys are ideal for the following applications:
-- Chemical treatment tanks and pipes
-- Process systems for offshore oil and gas platforms
-- Condensers, heat exchangers [SCALE STEEL]and pipes containing seawater or crude oil
-- Filter washers, vats and press rollers in pulp bleaching plants
-- Flue gas scrubber environment of power plant
-- Tall distillation tower and packaging
-- Desalination equipment and pumps
-- Water piping system for nuclear power plants
-- Transformer boxes exposed to the Marine environment
-- Pharmaceutical equipment (purification)
-- Food processing equipment
1.2738 is a commonly used German standard plastic die steel, usually referred to as 738.The more popular name for this kind of steel is 718, which is the product name of Sweden One Win 100.718 general hardening hardening[SCALE STEEL] to HRC28~36, processed into a mold after direct use, no further heat treatment.The pre-hardened 718 is called 718H.
CHINA YB/T 094-1997 SM3Cr2NiMo
YB/T 107-2013 SM3Cr2MnNiMo
GB/T 24594-2009 3Cr2MnNiMo
AMERICA approximate≈ P20+Ni
SWEDEN UDDEHOLM IMPAX SUPREME
ASSAB[SCALE STEEL] 718 SUPREME
GERMANY DIN 17350-1980 40CrMnNiMo8-6-4
STANDARD GB/T 1299 ASSAB DIN 17350
GRADE 3Cr2MnNiMo 718 1.2738
C 0.32~0.40 0.37 0.35~0.45
Si 0.20~0.40 0.30 0.20~0.40
Mn 1.10~1.50 1.40 1.30~1.60
P ≤0.030 -- ≤0.035
S ≤0.030 -- ≤0.035
Cr 1.70~2.00 2.0 1.80~2.10
Mo 0.25~0.40[SCALE STEEL] 0.2 0.15~0.25
Ni 0.85~1.15 1.0 0.90~1.20
(1) excellent performance of polishing and photoetching;
(2) good machining performance;
(3)High purity and uniformity;
(4) uniform[SCALE STEEL] hardness;
(5) The subsequent nitriding treatment or local flame quenching can improve the surface strength and surface wear resistance, and reduce the surface failure.
Compared with the traditional plastic die steel P20, 718 has better toughness and hardenability due to the addition of 1% nickel, and it performs better in large cross section size molds.This steel is suitable for large, especially the thickness of more than 400mm, requiring uniform hardness, high toughness and good [SCALE STEEL]surface polishing performance of plastic molds, such as TV frame and back shell, copy machine shell, bumper, shock absorber, instrument panel and other large molds, as well as trash can mold, die casting mold frame, etc..