Products

27SiMn – GB/T 3077-2015 Alloy Steel Pipe Krobo Steel

Technique Hot Rolled/Cold Drawn
Steel grades 27SiMn
Standards GB/T 3091-2001,GB/T13912-2002, BS 1387, ASTM F1083 ect.
Delivery Time 10days from stock; 15-20days produced according to the qty
Payment Term T/T or L/C
Price Term CIF; CFR; FOB
Surface Treatment Black painting/varnished surface,anti-corrosion oil, galvanized or as per required by customer

27SiMn alloy steel pipe 27simn seamless steel pipe=27 silicon manganese seamless steel pipe, is one of the materials of seamless steel pipe, the carbon content is between 0.24-0.32%, simn is listed separately because of the five elements (carbon C, silicon Si , manganese Mn, phosphorus P, sulfur S), the highest content of silicon manganese is about 1.10-1.40%.

27SiMn chemical composition

C

Si

Mn

P

S

Cu

Cr

Ni

0.24-0.32

1.10-1.40

1.10-1.40

≤0.035

≤0.035

≤0.30

≤0.30

0.3

 

27SiMn Mechanical property

Tensile strength
Rm

≥860MPa

yield strength ReH

≥760MPa

Elongation A5

12% or higher

shrinkage Ψ

40% or higher

impact energy
 AkV2 (20 ℃)

≥39J

Hardness

240 ~ 280 HBW

Application:

27SiMn has good machinability and cold deformation plasticity. It maintains high strength and wear resistance during heat treatment and high toughness during water quenching. 27SiMn steel is widely used in automobile, petroleum, chemical industry, shipping industry, 27SiMn steel tubes are normalized and tempered, phosphate oiled inside and outside,  is generally used for manufacturing hot stamping parts requiring high toughness and wear resistance, such as various hydraulic parts.

Classification By Size

The length is generally 6000mm, 1250mm,2200mm,12000mm, and the thickness is distinguished by cold rolling and hot rolling. Cold rolling mainly has thickness 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm. The main thickness of hot rolling is 3.0mm, 4.0mm, 6.0mm, 8.0mm, 10.0mm, and the width is generally 1000mm, 1219mm, 1500mm.Please contact customer service for general specifications.

Hot-rolled carbon steel pipe are produced by continuous hot-rolled carbon steel technology with hot-rolled steel strip or cold-rolled steel strip as the substrate. The hot-rolled carbon steel sheet is supplied as a rectangular flat plate by cross-cutting; the hot-rolled carbon steel sheet is supplied in coil form by coiling, and the hot-rolled carbon steel sheet coil can be divided into hot-rolled carbon steel sheet coil and cold-rolled carbon steel sheet Coils, they are mainly used in construction, home appliances, automobiles, containers, transportation and household business and other fields. Especially steel structure construction, automobile manufacturing, steel silo manufacturing and other industries.

Their main features are: strong corrosion resistance, good appearance quality, benefit from deep processing, economical and practical, etc.

Application range:

  • After annealing, it is processed into ordinary cold rolling;

(2) The galvanizing unit with pre-annealing treatment device processes galvanizing;

(3) Panels that basically do not need to be processed.

27SiMn chemical composition
CSiMnPSCuCrNi
0.24-0.32

1.10-1.401.10-1.40≤0.035≤0.035≤0.30≤0.300.3
27SiMn Mechanical property
Tensile strength
Rm
≥860MPa
yield strength ReH≥760MPa
Elongation A512% or higher
shrinkage Ψ40% or higher
impact energy
 AkV2 (20 ℃)
≥39J
Hardness240 ~ 280 HBW

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