TOCT 4543 Gr.20XH
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Material standard specification of TOCT 4543 type 20XH datasheet,TOCT4543 Grade 20XH Chemical compositions, TOCT 4543 Gr.20XH Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, TOCT 4543 Gr.20XH Heat treatment, Straightening, 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3. Cold working, Peeled or rough turned machining. Material technical specification TOCT 4543 - 1971.
TECHNICAL SPECIFICATION - TOCT 4543 Grade 20XH
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel Cr - Ni type
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.17 ~ 0.23
Si (％): 0.17 ~ 0.37
Mn (％): 0.40 ~ 0.70
P (％) ≤: 0.035
S (％) ≤: 0.035
Cr (％): 0.45 ~ 0.75
Ni (％): 1.00 ~ 1.40
Mo (％): -
Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1200 ~ 850 Deg.
Hot working temperarture: 1200 ~ 850 Deg.
Heat treatment: Quenching 860 Deg. water or oil cooling
Tempering 180 water or oil cooling
Tensile strength,σb/≥ MPa: 785
Yield strength, σ0.2/≥ MPa: 588
Elongation, δ ≥(％): 14.0
Reduction of area, ф ≥ (％): 50.0
Tensile strength,σb/≥ MPa: 785
Yield strength, σ0.2/≥ MPa: 588
Elongation, δ ≥(％): 14.0
Reduction of area, ф ≥ (％): 50.0
Impact, AK (J/cm2): 78
Annealed hardness | HBW: 197
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.
Annealed hardness | HBW: 197
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.
TECHNICAL SALES ASSISTANCE
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- Email: lh.steel@hotmail.com
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