St1kp

Characteristics of steel grade St1kp

St1kp - Structural carbon steel of ordinary quality, welds well, 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 35 millimeters, heating and subsequent heat treatment are recommended; it is not prone to flake sensitivity and there is no tendency to temper brittleness. Cutting machinability in the hot-rolled state at HB 136 Kυ hard alloy. = 2.0 and Kυ b.st. = 1.6, has found its application in parts of increased plasticity that do not bear responsibility, lightly loaded elements of welded structures with the absence of large loads, but at the same time operating constantly and at positive temperatures. Forging at temperatures from 1300 to 750 0C, cooling is carried out in air.

Characteristics of the material St1kp.

Chemical composition in % of material - St1kp

GOST - 380 - 71

Brand:	St1kp
Classification:	Structural carbon steel of ordinary quality


Application:	parts of high viscosity and low hardness, anchor bolts, connecting sheathings, non-critical fittings, rivets and boiler connections
Foreign analogues:	Known

C	Si	Mn	S	P
0.06 — 0.12	up to - 0.05	0.25 — 0.5	up to - 0.05	up to - 0.04

Mechanical properties at T=20oC of the material St1kp.

Assortment	Size	Eg.	sв	sT	d5	y	KCU	Thermal change
—	mm	—	MPa	MPa	%	%	kJ/m2	—
-	-	-	310-400	-	33	-	-	-

- - Material hardness - St1kp - , - - -

HB 10 -1 = 110 - MPa

Foreign analogues of material St1kp

Attention! - Both exact and closest analogues are indicated.

USA	Germany	Japan	France	England	European Union	Italy	China	Bulgaria	Hungary	Poland	Czech
—	DIN,WNr	JIS	AFNOR	B.S.	EN	UNI	G.B.	BDS	MSZ	PN	CSN

Designations:

Mechanical properties :
sв	— Short-term strength limit, [MPa]
sT	— Proportional limit (yield strength for permanent deformation), [MPa]
d5	— Elongation at break, [%]
y	— Relative narrowing, [%]
KCU	— Impact strength, [kJ/m2]
HB	— Brinell hardness, [MPa]

pokovka.biz

Interpretation of steel grade St1kp

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, 1 indicates the carbon content in the alloy is 0.06–0.12%. The letters after the brand number indicate the degree of deoxidation: kp - boiling. In terms of price, boiling steels are the cheapest, but their cold brittleness threshold is 30 - 40% higher than calm steels.

Material St1kp Chelyabinsk

Not a single production can operate without steel, be it heavy engineering or the manufacture of household electrical appliances. There are many brands of this product, as well as a large number of dispensing forms. Our company sells St1kp material in large quantities and with a minimal margin. To clarify the properties and characteristics of a particular brand, you can contact the company’s managers.

Like all products, St1kp material is purchased from leading manufacturers. Therefore, we are ready to provide a quality guarantee with full responsibility. The minimum number of intermediaries determines the low cost. Coupled with fast delivery, this enables our business partners to conduct stable and mutually beneficial cooperation.

In addition to tempering, in the form of one or another part (blank), our company carries out metal processing. All events undergo strict control for compliance with GOST and rules. The specialists of our company carry out such work as galvanizing, creating parts according to customer drawings, producing castings, manufacturing various profiles and much more.

Having the latest equipment and vast experience in our arsenal, we can offer product testing for a number of parameters, such as strength characteristics, chemical composition, alloy purity, and so on.

Each buyer is offered a huge range of products in various formats, as well as current services and works. To quickly understand and choose a product that meets your needs, you need to contact the company manager and receive detailed information on all issues of interest.

Supply St1kp

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 .

Classification, nomenclature and general norms	GOST 380-2005;
Long and shaped rolled products	GOST 5422-73; GOST 8239-89; GOST 8240-97; GOST 8510-86; GOST 8509-93; GOST 30136-95; GOST 9234-74; GOST 10551-75; GOST 30565-98; GOST 535-2005; GOST 19240-73; GOST 11474-76; GOST 2879-2006; GOST 2591-2006; GOST 2590-2006; GOST 19425-74;
Sheets and strips	GOST 16523-97; GOST 8568-77; GOST 103-2006; GOST 14918-80;
Ribbons	GOST 3560-73; GOST 6009-74;
Sheets and strips	GOST 24244-80;
Ribbons	GOST 19851-74;
Steel pipes and connecting parts for them	GOST 3262-75;

Mechanical characteristics

Section, mm	sТ\|s0.2, MPa	σB, MPa	d5, %	d4	d10
Cold-rolled steel for enameled cookware according to GOST 24244-80 in the delivered condition (rolled drawing group, quality category is indicated)
0.5-1.5	≥250	270-368	—	≥30	≥36
1.5-2	≥235	270-368	—	≥30	≥36
2-2.5	≥235	270-368	—	≥32	≥36
0.5-2	—	255-362	—	≥28	≥34
2-2.5	—	255-362	—	≥30	≥34
0.5-2	—	265-382	—	≥26	—
2-2.5	—	265-382	—	≥29	—
0.5-2	—	265-382	—	≥25	—
2-2.5	—	265-382	—	≥28	—
Hot-rolled bars and shapes in delivery condition
≤10	≥195	305-390	≥35	—	—
≥100	≥165	305-390	≥32	—	—
10-20	≥195	305-390	≥35	—	—
20-40	≥185	305-390	≥34	—	—
40-100	≥175	305-390	≥32	—	—
The sheet is in delivery condition. No heat treatment
—	—	310-400	≥33	—	—
Hot-rolled thin sheets in delivery condition. Strength group OK300V
≤2	≥215	300-480	—	≥21	—
2-3.9	≥215	300-480	—	≥23	—
Cold-rolled thin sheets in delivery condition. Strength group OK300V
≤2	≥215	300-480	—	≥24	—
2-3.9	≥215	300-480	—	≥26	—

Foreign analogues of steel grade St1kp

USA	A283
Germany	S185, St33
Japan	SS300, SS330
France	S185
England	HR15
European Union	S185
Italy	S185
China	Q195
Bulgaria	ASt0, ASt1
Hungary	Fe310O
Poland	St0S
Czech	10000

Structural steel
Tool steel

Steel St1kp - characteristics, chemical composition, properties, hardness

Bulletin board

Steel St1kp - characteristics, chemical composition, properties, hardness

St1kp structural carbon steel of ordinary quality. Characteristic


Classification:	Structural carbon steel of ordinary quality
Application:	parts of high viscosity and low hardness, anchor bolts, connecting sheathings, non-critical fittings, rivets and boiler connections

Chemical composition in % of the material St1kp

C	Si	Mn	S	P
0.06 — 0.12	up to 0.05	0.25 — 0.5	up to 0.05	up to 0.04

Mechanical properties at T=20oC of the material St1kp

Assortment	Size	Eg.	sв	sT	d5	y	KCU	Thermal change
—	mm	—	MPa	MPa	%	%	kJ/m2	—
310-400	33

Designations:

Mechanical properties:
sв	— Short-term strength limit, [MPa]
sT	— Proportional limit (yield strength for permanent deformation), [MPa]
d5	— Elongation at break, [%]
y	— Relative narrowing, [%]
KCU	— Impact strength, [kJ/m2]
HB	— Brinell hardness

s-metall.com.ua

Carbon steel of ordinary quality GOST 380-88

Application area.

Carbon steel of ordinary quality is intended for the production of hot-rolled products: long-rolled, shaped, thick-sheet, thin-sheet, wide-rolled and cold-rolled thin-sheet, as well as ingots, blooms, slabs, rounds, rolled and continuously cast billets, pipes, forgings and stampings, strips, wires, hardware and etc.

Classification.

Carbon steel of ordinary quality is produced in the following grades: St0, St1kp, St1ps, St1sp, St2kp, St2ps, St2sp, St3kp, St3ps, St3sp, St3Gps, St3Gsp, St4kp, St4sp, St4ps, St5ps, St5sp, St5Gps, St6ps, St6sp.

The letters St stand for steel.

The numbers 0,1, 2, 3, 4, 5, 6 are the conventional brand number depending on the chemical composition. Increasing the number means increasing carbon content and tensile strength.

The degree of deoxidation of steel is indicated by letters after the numbers:

kp – boiling;

ps – semi-calm;

sp – calm;

steel grade	Substitute	Recommended Application	Weldability
St 0	No	For minor structural elements and non-essential parts: decking, fittings, washers, railings, casings, cladding, etc.	Weldable without restrictions.
St2ps St2kp St2sp	St2sp St2ps	Non-critical parts that require increased ductility, lightly loaded elements of welded structures operating under constant loads and positive temperatures.	Weldable without restrictions. For thicknesses greater than 36 mm. Preheating and subsequent heat treatment are recommended.
St3kp	ST3ps	For minor and lightly loaded elements of welded elements and non-welded structures operating in the temperature range from - 10 to 400 degrees Celsius.	Weldable without restrictions. For thicknesses greater than 36 mm. Preheating and subsequent heat treatment are recommended.
St3ps	St3sp	Load-bearing and non-load-bearing elements of welded and non-welded structures and parts operating at positive temperatures. Shaped and sheet metal (5th category) with a thickness of up to 10 mm for load-bearing elements of welded structures operating under variable loads in the range from -40 to +425 degrees Celsius for St3ps and a thickness of up to 25 mm. For St3sp, St3ps with rolled thickness from 10 to 25mm. - for load-bearing elements of welded structures operating at temperatures from -40 to + 425 degrees, subject to delivery with guaranteed weldability, St3sp with rolled metal thickness over 25 mm - for load-bearing elements of welded structures operating at temperatures from -40 to + 425 degrees Celsius , subject to delivery with guaranteed weldability.	Weldable without restrictions. For thicknesses greater than 36 mm. Preheating and subsequent heat treatment are recommended.
St3sp	St3ps
St3Gps	St3ps St18Gps Read also: Refractory metals - list and their beneficial properties	Shaped and sheet metal with a thickness from 10 to 36mm. for load-bearing elements of welded structures operating under variable loads in the range from -40 to + 425 degrees Celsius, and for load-bearing elements of welded structures operating at temperatures from -40 to +425 degrees with guaranteed weldability.	Weldable without restrictions. For thicknesses greater than 36 mm, preheating and subsequent heat treatment are recommended.
St4kp	No	Welded, riveted and bolted structures of increased strength in the form of long, shaped and sheet products, as well as for lightly loaded parts.
St4ps	St4sp	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, etc.	Limited weldability.
St5ps St5sp	St6sp St4sp	Parts of riveted structures: bolts, nuts, handles, rods, rollers, bushings, wedges, axles, levers, stops, pins, fingers, rods, rods, sprockets, tubular sockets, flanges and other parts operating in the range of 0 to + 425 degrees Celsius, forgings with a cross-section up to 800mm.	Limited weldability. Preheating and subsequent heat treatment are recommended.
St6ps	For high-strength parts: axles, shafts, pins, pistons, etc.	Limited weldability. Preheating and subsequent heat treatment are recommended.
St6sp	St5sp	For high-strength parts: axles, shafts, pins and other parts in a heat-treated state, as well as for bar reinforcement with periodic profiles.	Limited weldability. Preheating and subsequent heat treatment are recommended.

St1kp

Brand: St1kp Classification: Structural carbon steel of ordinary quality Application: parts of high toughness and low hardness, anchor bolts, connecting sheathing, non-critical fittings, rivets and boiler connections
Chemical composition in % of the material St1kp.

C	Si	Mn	S	P
0.06 — 0.12	up to 0.05	0.25 — 0.5	up to 0.05	up to 0.04

Mechanical properties at T=20oC of the material St1kp.

Assortment	Size	Eg.	sв	sT	d5	y	KCU	Thermal change
—	mm	—	MPa	MPa	%	%	kJ/m2	—
310-400	33

Designations:

Mechanical properties :
sв	— Short-term strength limit, [MPa]
sT	— Proportional limit (yield strength for permanent deformation), [MPa]
d5	— Elongation at break, [%]
y	— Relative narrowing, [%]
KCU	— Impact strength, [kJ/m2]
HB	— Brinell hardness