ASTM A387 Grade 2
2026-01-24 17:15:00 Origin： Remark：0 Click：
Standard Specification ASTM A387 grade 2 round bar, flat bar, plate, cold drawn rod from Steelmaking, ESR melted, hot bloomed, forged, rolled, heat treated
Technical specification: ASTM A387 - 2017
Material category: 0.65Cr - 0.55Mo base alloy steel
Typical chemical composition (mass fraction %)
Carbon, C (％): 0.05 ~ 0.21
Typical chemical composition (mass fraction %)
Carbon, C (％): 0.05 ~ 0.21
Manganese, Mn (％): 0.55 ~ 0.80
Silicon, Si (％): 0.15 ~ 0.40
Silicon, Si (％): 0.15 ~ 0.40
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (%): 0.50 ~ 0.80
Molybdenum, Mo (%): 0.45 ~ 0.60
Sulfur, S (％) ≤: 0.025
Chromium, Cr (%): 0.50 ~ 0.80
Molybdenum, Mo (%): 0.45 ~ 0.60
Ferrum, Fe (%): balance
TYPICAL MECHANICAL PROPERTIES
Tensile strength, Rm ≥ MPa: 380 ~ 550
Yield strength, Rp0.2 / MPa: 230
Elongation, A5 ≥ (％): 18.0
Reduction of area, Z ≥ (％): -
Hardness via heat treatment /HBW: 255 MAX.
Reduction of area, Z ≥ (％): -
Hardness via heat treatment /HBW: 255 MAX.
PRODUCT DESCRIPTION
The alloy is usually produced by BEF /EAF + VD followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' specific requirements.
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 ~ 200 X W15 ~ 1200 X L1000 - 12000 mm
Forging piece: stepped shafts, other different shapes based on OEM.
The alloy is usually produced by BEF /EAF + VD followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' specific requirements.
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 ~ 200 X W15 ~ 1200 X L1000 - 12000 mm
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
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