Page 1582 - MISUMI Thailand Economy Series

[Materials]
Varieties and Applications 1

1.General Steel Materials 3.Aluminum Alloy Materials
Type Material JIS Symbol Material GB Symbol Applications Comment GB Flat Bar Square Bar Hexagonal Bar Round Bar Steel Plate Section Steel Type Material Code Applications Comment JIS Flat Bar Square Bar Hexagonal Bar Round Bar Section Steel
Rolled Steel for General Fine Workability and
General Structure SS400 Q235 Machine Parts Weldability GB/T 700-2006 k k k k k Al−Cu A2011 General-Use Strength Free-Cutting Alloy. It excels in machinability but k
Polished Excellent Precision and Surface Alloy Materials has worse corrosion resistance.
Steel Bar SS400D － General Roughness. Ready for use － k k k k Al−Cu A2017 General-Use High Strength and Machinability Duralumin k k k
(Cold-Drawn) Machine Parts directly after slight cutting. Alloy Strength Materials
Carbon Steel S45C 45 Steel Fit for Hardening Al−M A5052 General Machine Most typical aluminum alloy with medium strength. k k
for General Tensile Strength 58kgf/mm 2 GB/T 699-2015 k k k k k Alloy Parts Covers, cases, etc. With high fatigue strength in comparison with its strength and high corrosion resistance to seawater.
Machine Machine Parts Fit for Hardening Al−M A5056 General Machine It has fine machined surface and high corrosion resistance to seawater. It JIS H 4000
Structural Use S50C 50 Steel Tensile Strength 66kgf/mm 2 Alloy Parts has fine machined surface and high corrosion resistance to seawater. k
Al−M −Si General Machine Heat-treated corrosion resisting alloy.
For Drill Rod (Round Bar) A6061 k k
SKS93 － SK4 surface-finished after － k k k Alloy Parts High durability owing to T6 treatment.
Carbon Tool Shafts, Pins, cold drawing. Al−M −Si General Machine Weaker than 6061, but more extrudable. Applicable to complex cross-sections shapes.
Steel etc. Class 7(−DG7)=h7 Alloy A6063 Parts and Structural Material Good corrosion resistance and surface treatment. k k k
SK4 T11 Class 8(−DG8)=h8 k k
Class 9(−DG9)=h9. Al−Zn−M A7075 Jigs and Dies It is one of the strongest aluminum alloys but has
GB/T 1299-2014 Alloy worse corrosion resistance. Extra Super Duralumin k
SK5 T8Mn Deformation caused by k k k
Alloy Tool Hardening Hardening JIS Acronyms for Non-Ferrous Metal
Steel Parts is much less than that of SK
SKS3 9CrWMn material. － k k k P Plate, Strip, Disk
PC Laminate
SCM435 35CrMo General Tensile Strength 70kgf/mm , GB/T 3077-2015 BE Extruded Bar
2
Chrome machine Parts Tensile Strength after Hardening BD Drawn Bar
Molybdenum SCM415 － requiring & tempering: 95 kgf/mm or － k k k k k W Drawn Wire
2
Steel strength. more. Hardness: HB270 or more. TE Seamless Extruded Tube
SCM420 20CrMo Screws, etc. Hardening: HRC50 or more. － TD Seamless Drawn Tube
Sulfuric and SUM21 Y12 Made of carbon steel plus GB/T 8731-2008
Sulfur General sulfur to enhance machinability. Quality Codes for Aluminum and Aluminum Alloys
Compound Machine Parts
Free SUM22L － (Free-Cutting Free-Cutting Steel － k k k Code Definition Description
Cutting steel) containing sulfur and lead. Completed as a product, without any order for thermal refining. Extruded or forged material,
Steel SUM24L Y15Pb GB/T 8731-2008 F Plain Manufactured Material not thermally refined.
High Carbon Chrome Roller H112 Wrought material, for which certain mechanical properties are guaranteed without the need of hardening.
Bearing Steel SUJ2 GCr15 bearings, etc. Bearing Steel GB/T 18254-2016 k Brought into the softest state by Completely re-crystallized by annealing. A thermally treated alloy should be cooled at a temperature
Rolled at an almost ambient temperature. O annealing. below the annealing temperature to prevent the effect of annealing completely.
Cold-Rolled SPCC Covers, High dimensional precision and fair texture. k H1n Hardened by cold working. n is a numeral from 1 to 9, representing the degree of hardening. "8" represents hard material,
Fine machinability. Easy to
Steel Plate － cases, etc. bend, wring and cut. － H H2n Hardened and then properly softened by heat. and "4"represents the state halfway 1/2 between 0 and hard material. "2" represents the level
Fine Weldability. H3n Stabilized after cold working. halfway between 0 and 1/2 hardness, and "6" the state halfway between 1/2 hardness and hard
material.
Hot-Rolled SPHC General machine Plates for general use are
Steel Plate － structural parts. 6 mm or less in thickness. － k T1 Cooled after high-temperature working Quenched at the end of a cold working process and allowed to age and harden at ambient temperature. Extruded material
is typical material processed in this way. Cold working such as correction may be conducted unless it affects the strength.
and then allowed to age naturally.
Used for an alloy such as 6063, for which the effect of quenching can be realized by cooling after hot working (extrusion).
2. Stainless Steel Materials T3 Allowed to age naturally after solution Cold working is conducted for plates, rods, tubes, etc. to enhance the strength in some
cases, and to improve the corrective dimension precision in other cases, with an obvious
treatment and cold working.
Type Material JIS Symbol Material GB Symbol Applications Comment Magnetism GB Flat Bar Square Bar Hexagonal Bar Round Bar Steel Plate Section Steel Allowed to age naturally after effect. T361 when cold working is performed to a higher degree than that for T3.
Machine parts 18-8 Free-Cutting Stainless Steel, Non- T351 solution Cold working is conducted to enhance the strength after solution treatment, and then it is tension processed
Austenite SUS303 Y1Cr18Ni9 requiring antirusting Magnetic. More Machinable than SUS304 None* GB/T 1220-2007 k k treatment and cold working. to give 1.5% to 3% permanent distortion to remove residual tension, and allowed to age naturally.
Machine parts Most Versatile Antirusting and Heat- Natural aging after solution Aging is usually completed after exposure to ambient temperature for approx. 4 days. In the case of 7NO1,
Austenite SUS304 06Cr19Ni10 requiring antirusting Resisting Steel for General Use None* GB/T 3280-2015 k k k k k k T4 treatment however, aging is a longer process. The tensile property upon the elapse of one month is adopted as
Machine parts More resisting to seawater and other referential data. The variety that is given T4 treatment by a user under specified conditions is called T42.
Austenite SUS316 0Cr17Ni12Mo2 requiring antirusting media than SUS304. None* GB/T 1220-2007 k k k T5 Hardened through artificial aging after Hardened through artificial aging to improve the mechanical properties and stabilize the dimensions. Used for an
high-temperature processing and quenching alloy or casting such as 6063, for which the effect of quenching can be realized by cooling after hot working (extrusion).
Martensite SUS440C － Machine parts requiring antirusting Fit for Hardening. Available － k T6 Hardened through artificial aging Excellent strength can be attained for a thermally treated alloy without cold working in the typical heat
(Less corrosion resistant than austenite.)
Machine parts requiring antirusting Fit for Hardening. Fine after solution treatment. treatment process. An item that is given T6 treatment by a user under specified conditions is called T62.
Martensite SUS410 1Cr17 (Less corrosion resistant than austenite.) Machinability. Available GB/T 1220-2007 k T Wrought Materials: Quenched with lukewarm water to prevent distortion due to the main hardening.
*EMartensite exhibits magnetic properties. Machining of Austenite may cause magnetic properties. T61 Hardened through artificial aging
after solution treatment by
quenching with lukewarm water. The conditions for hardening through artificial aging are adjusted to attain strength
Casting:Tempered after hardening exceeding that accomplished by regular T6 treatment.
T7 Stabilized after solution treatment Overaging surpassing those needed for hardening through artificial aging is carried out to attain the
maximum strength, because special properties are adjusted somewhat at the expense of strength.
T73 Overaging after solution Overaging after solution treatment to rectify the tendency to crack due to corrosion under stress.
treatment.
Specified in 7075, forgings, of JIS.
Overaging after removal of Overaging after removal of residual stress by compression to retain 1% to 5% permanent deformation
T7352 residual subsequent to solution treatment, in order to rectify the tendency to crack due to corrosion under stress.
stress after solution treatment. Included in free-forged part, 7075.
Hardened through artificial aging Cold working performed, with a noticeable effect, to improve the mechanical properties or to rectify drawbacks
T8 after cold working subsequent or improve dimension precision. Called T83 when the sectional area is reduced 3%through cold working.
to solution treatment. Called T86 when the reduction rate is 6%. These procedures are performed to enhance the strength.
Cold working after hardening through
T9 artificial aging subsequent to Cold working is necessary to enhance the strength.
solution treatment.
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