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A470 Grade D Class 8
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ASTM A470 Grade D Class 8 Ex-stock supplier, A470 Grade D Class 8 Round bar, Flat bar, Plate ESR melted, heat treated, cold worked

TECHNICAL DATA SHEET - ASTM A470 Grade D Class 8

Technical specifications: ASTM A470 - 2015

Official test certificate: issued by TUV - SGS

Material type: 1.3Cr - 1.25Mo - 0.25V steel
Typical chemical compositions (mass fraction %)
Carbon, C (％): 0.25 ~ 0.35
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.012
Sulfur, S (％): ≤ 0.015

Silicon, Si (％): ≤ 0.30

Nickel, Ni (%): ≤ 0.75

Chromium, Cr (%): 1.05 ~ 1.50

Molybdenum, Mo (%): 1.00 ~ 1.50

Vanadium, V (%): 0.20 ~ 0.30

Aluminum, Al (%): ≤ 0.015

MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Grade D Class 8

Tensile strength, Rm ≥ MPa: 725 ~ 860
Yield strength, Rp0.2 ≥ MPa: 585
Elongation, A5 ≥ (％): 17.0
Reduction of area, Z ≥ (％): 43.0
Impact, AKv (J/cm2): 8

MELTING PROCESS

The steel shall be made by the basic electric-furnace (EF + LF + VD ) or Vacuum induction melting (VIM) process. Subsequent secondary melting of the steel by ESR or VAR.

PROFILE & DIMENSIONS
Round bar & disc (diameter): 6.0 to 700 mm
Square bar / Flat bar: 10 to 500 mm
Steel strip: T0.30 ~ 3 X W10 ~ 200 X Coil
Forging piece: stepped shafts, other different shapes based on OEM.

TECHNICAL SALES ASSISTANCE
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