• Elongation：≥12
• Packing：by Sea, Air
• Dimensions：Customized
• OEM：Yes
• Delivery Time：7-10 Days
• Test：BV-ISO-Ce-SGS-Mtc
• Width：1000-3000mm or Any
• Heat Treament：Quenched, Normalized, Tempering, Q+T
• Length：1-12m or as Your Request
• Thickness：2-300mm or Any
• Stock：1000 Tons
• Special Use：High-strength Steel Plate
• Model NO.：25X2H4MA
• Transport Package：Bags or Wooden Cases
• Specification：ISO SGC
• Trademark：Taixie
• Origin：Wuxi, Jiangsu
• HS Code：7505120000
• Production Capacity：10000tons,Y

Basic Info.

Model NO. 25X2H4MA Special Use High-strength Steel Plate Stock 1000 Tons Thickness 2-300mm or Any Length 1-12m or as Your Request Heat Treament Quenched, Normalized, Tempering, Q+T Width 1000-3000mm or Any Test BV-ISO-Ce-SGS-Mtc Delivery Time 7-10 Days OEM Yes Dimensions Customized Packing by Sea, Air Elongation ≥12 Transport Package Bags or Wooden Cases Specification ISO SGC Trademark Taixie Origin Wuxi, Jiangsu HS Code 7505120000 Production Capacity 10000tons/Y

Product Description

TECHNICAL SPECIFICATION - TOCT 4543 Grade 25X2H4MA

TECHNICAL SPECIFICATION: TOCT 4543 - 1971

OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV

MATERIAL CATEGORY: alloy structural steel Cr - Ni - Mo type

CHEMICAL COMPOSITION (WEIGHT %)
C (%): 0.21 ~ 0.28
Si (%): 0.17 ~ 0.37
Mn (%): 0.25 ~ 0.55
P (%) ≤: 0.025
S (%) ≤: 0.025
Cr (%): 1.35 ~ 1.65
Ni (%): 4.00 ~ 4.40
Mo (%): 0.30 ~ 0.40
Cu (%): ≤ 0.30

MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1150 ~ 850 Deg.
Heat treatment: Quenching 850 Deg. air cooling
Tempering 560 oil cooling
Tensile strength,σb/≥ MPa: 1079
Yield strength, σ0.2/≥ MPa: 932
Elongation, δ ≥(%): 11.0
Reduction of area, ф ≥ (%): 45.0
Impact, AK (J/cm2): 88
Annealed hardness | HBW: 269

TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation - turbine fasteners - boiler support rods
Process plant - fasteners
Mechanical gears, gear shaft, main axis, valve rods
Mechanical parts - connecting rods, bolts and nuts
Multidiameter shafts

OFFERING FORMS AND SHAPES
Round bar (Diameter): 0.50mm to 500mm
Square bar / Flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.