Stainless steel channel steel is a long strip of steel with a groove-shaped cross-section. The same as I-beam, stainless steel channel steel is also divided into ordinary channel steel and light channel steel. The model and specification are also expressed in millimeters of waist height (h) × leg width (b) × waist thickness (d). Such as 120 × 53 × 5 channel steel, that is, waist height 120mm, round steel, need to add a, b, c, etc. to the right side of the model to distinguish. Usually, stainless steel channel steel is represented by the number of centimeters of waist height, such as the above channel steel called 12# channel steel. The specification range of channel steel is 5-40#. Including and marking requirements shall be implemented in accordance with GB2101-80.
(1) Hot-rolled stainless steel ordinary channel steel (GB707-88) Main uses: ordinary channel steel is mainly used in building structures, vehicle manufacturing and other industrial structures, and is often used in conjunction with I-beams.
(2) Hot-rolled stainless steel light channel steel (YB164-63) Hot-rolled light channel steel is a kind of steel with wide legs and thin walls, which has better economic effect than ordinary hot-rolled channel steel. Its specifications and models range from 5-40#. In 1966, the smelting standard stipulated the specification range from 10-40#. Main use: construction and steel structure, etc.
The commonly used stainless steel channel materials for stainless steel production are: 201, 202, 301, 304, 321, 316, 316L, and special materials can generally be customized.
Numbering and representation of channel steel
①Use international chemical element symbols and national symbols to represent chemical components, and use Arabic letters to represent component content:
Such as: China, Russia 12CrNi3A
②Use fixed-digit numbers to represent steel series or numbers; such as: the United States, Japan, 300 series, 400 series, 200 series;
③ The serial number is composed of Latin letters and sequences, which only indicate the purpose.
my country's numbering rules
①Use element notation
②Use, Pinyin, open hearth steel: P, boiling steel: F, killed steel: B, class A steel: A, T8: special 8,
GCr15: Ball
◆Combined steel, spring steel, such as: 20CrMnTi 60SiMn, (in ten thousandths of C content)
◆Stainless steel, alloy tool steel (with a few thousandths of C content), such as: 1Cr18Ni9 one thousandth (ie
0.1%C), stainless C≤0.08% such as 0Cr18Ni9, ultra-low carbon C≤0.03% such as 0Cr17Ni13Mo
International stainless steel marking method
The American Iron and Steel Institute uses three digits to designate various standard grades of malleable stainless steel. in:
①Austenitic stainless steel is marked with numbers of 200 and 300 series,
② Ferritic and martensitic stainless steels are represented by numbers in the 400 series. For example, some of the more common austenitic stainless steels
are marked with 201, 304, 316 and 310,
③ Ferritic stainless steel is marked with 430 and 446, and martensitic stainless steel is marked with 410, 420 and 440C
Note, duplex (austenite-ferrite),
④Stainless steel, precipitation hardening stainless steel and high alloys with iron content less than 50% are usually named by patent names or trademarks.
name.
Standard Classification and Grading
4-1 Grading Classification:
①National standard GB ②Industry standard YB ③Local standard ④Enterprise standard Q/CB
4-2 Classification:
①Product standard ②Packaging standard ③Method standard ④Basic standard
4-3 Standard level (in three levels):
Y level: International advanced level I level: International general level H level: Domestic advanced level
4-4 GB
GB1220-84 Stainless Steel Bars (Class I) GB4241-84 Stainless Welded Discs (Class H)
GB4356-84 Stainless Welding Disc Garden (Class I) GB1270-80 Stainless Steel Pipe (Class I)
GB12771-91 Stainless Welded Pipe (Class Y) GB3280-84 Stainless Steel Cold Plate (Class I)
GB4237-84 Stainless Hot Plate (Class I) GB4239-91 Stainless Cold Belt (Class I)