Steel 4SP

Characteristics of steel grade St4ps

St4ps - Structural carbon steel of ordinary quality, limited weldability, welding is carried out without heating and without subsequent heat treatment, welding methods: manual arc welding, automatic submerged arc welding and gas protection, KTS, ESW. For thicknesses greater than 36 millimeters, heating and subsequent heat treatment are recommended; it is not prone to flake sensitivity and there is no tendency to temper brittleness. Machinability by cutting in the hot-rolled state at НВ 152 and σв=420 MPa, Kυ hard alloy. = 1.7 and Kυ b.st. = 1.7, has found its application in welded, riveted and bolted structures of increased strength in the form of long, shaped and sheet products, as well as for lightly loaded parts such as shafts, axles, bushings. Used in the production of I-beams, angle steel, channels. Forging is carried out at temperatures from 1280 to 800 0C, cooling is carried out in air.

Interpretation of steel grade St4ps

Decoding steel: Letter St. indicate that the steel is of ordinary quality, although most steels are high quality. The numbers from 0 to 6 are the conventional brand number depending on the chemical composition and mechanical properties. Typically, the higher the number, the more carbon and the greater the strength. In our case, the number 4 indicates the carbon content in the alloy is 0.18–0.27%. The letters after the brand number indicate the degree of deoxidation: ps - semi-calm. Steels of the first group, such as St4sp, are supplied with guaranteed mechanical properties and are used mainly without heat treatment.

Decoding steel grade 4sp

Decoding of steel: The letter at the beginning indicates a group of steel which defines the criteria for the ultimate strength for the chemical composition; if there is no letter, then such steel belongs to group A, and is supplied to consumers based on mechanical properties (such steel may have a high sulfur or phosphorus content). Letters St. indicate that the steel is of ordinary quality, although most steels are high quality. The numbers from 0 to 6 are the conventional brand number depending on the chemical composition and mechanical properties. Typically, the higher the number, the more carbon and the greater the strength. In our case, 4 indicates the carbon content in the alloy is 0.18–0.27%. The letters after the brand number indicate the degree of deoxidation: cn - calm. In terms of price, calm steels have become more expensive than semi-calm and boiling steels. Mild steel is steel obtained as a result of deoxidation. It is obtained by deoxidation with aluminum, manganese and silicon. The level of oxygen in it is so reduced that during metal processing no reaction occurs between carbon and oxygen, and the presence of non-metallic slags and their inclusion is reduced to a minimum. Calm steel has a dense structure and good mechanical properties. It is less prone to negative reactions to welding heat and to aging. The features of a homogeneous microstructure give the alloy maximum corrosion resistance and ductility.

Supply St4ps

Supplied in the form of long products, including shaped steel according to the regulations of GOST 2590-88 Hot-rolled round steel , GOST 2591-88 Hot-rolled square steel , GOST 8239-89 Hot-rolled steel I-beams , GOST 19771-93 Equal-flange bent steel angles, GOST 19772 -93 Bent steel angles, unequal flanges , GOST 8278-83 Bent steel channels, equal flanges , GOST 8281-80 , unequal , GOST 8283-93 steel trough equal flange profiles , GOST 380-94 Carbon steel of ordinary quality , GOST 85 09-93 Steel corners hot-rolled equal flange , GOST 8510-86 rolled steel angles unequal-flanged , GOST 8240-97 Hot-rolled steel channels , GOST 535-88 Rolled bars and shaped carbon steel of ordinary quality , GOST 2879-88 Rolled hot-rolled hexagonal steel, GOST 19903-2015 Hot rolled sheet products , GOST 19904-90 Cold-rolled sheets , GOST 16523-97 Rolled thin sheets of high-quality and ordinary quality carbon steel for general purpose, GOST 503-81 Cold-rolled low-carbon steel strip, GOST 103-76 Hot-rolled steel strip , GOST 82-70 Hot-rolled steel Wide-band universal, GOST 3282-74 Wire Steel low-carbon general purposes , GOST 17305-71 Carbon structural steel wires, GOST 10705-80 steel power steel pipes , GOST 10706-76 Pipes steel eight-dimensional , GOST 3262-75 Pipes steel water and gap-pipes .

Supply St4kp

Supplied in the form of long products, including shaped steel according to the regulations of GOST 2590-88 Hot-rolled round steel , GOST 2591-88 Hot-rolled square steel , GOST 8239-89 Hot-rolled steel I-beams , GOST 19771-93 Equal-flange bent steel angles, GOST 19772 -93 Bent steel angles, unequal flanges , GOST 8278-83 Bent steel channels, equal flanges , GOST 8281-80 , unequal , GOST 8283-93 steel trough equal flange profiles , GOST 380-94 Carbon steel of ordinary quality , GOST 85 09-93 Steel corners hot-rolled equal flange , GOST 8510-86 Hot-rolled steel angles, unequal , GOST 8240-97 Hot-rolled steel channels , GOST 535-88 Rolled bars and shaped carbon steel of ordinary quality , GOST 2879-88 Rolled hot-rolled hexagonal steel

Impact strength of steel St4ps

Mechanical properties of steel St4ps

Mechanical properties of steel St4sp according to GOST 380-94 regulations is sold in the form of hot-rolled steel with a cross-section of up to 20mm, from 20mm to 40mm, over 40mm to 100mm, and also over 100mm. Yield strength – 235, 245, 265 MPa. Tensile strength 410-530 MPa. Relative elongation after rupture is 21 – 24%.

Mechanical properties of St4ps steel according to the regulations of GOST 16523-89 and GOST 19903-2006 in the form of hot-rolled sheets and pipes:

Mechanical properties St4sp

Mechanical properties of St4ps steel at elevated temperature

Foreign analogues of steel grade St4ps

• Structural steel
• Tool steel

Brand: steel, metal St4ps

Brand: St4ps

Foreign analogues of the material
Both exact and closest analogues are indicated!