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Grade 403Cb+

Item No.: Grade 403Cb+
INQUIRY
Description
Introduction:
Grade 403Cb+ is usually produced by BEF & AOD followed by electroslag remelting (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
Bars are usually supplied black/bright in the annealed condition.

Applications:
Commonly used in industries such as offshore, marine, food, paper mills, oil field and aerospace.
Grade 403Cb+ is used for components such as fasteners, couplings, screws, bushings, studs, fittings, valve stems, roller, wear rings.

Technical Standard:
ASTM A276

All Grades Comparison
DIN ASTM AISI UNS JIS Other
- Grade 403Cb+ 403Cb+ S41041 - B50A365B

Chemical Composition (Weight %)
C Si Mn P S Cr Ni Mo Other
0.13 ~ 0.18 ≤ 0.50 0.40 ~ 0.60 ≤ 0.030 ≤ 0.030 11.5 ~ 13.0 ≤ 0.50 ≤ 0.20 Nb 0.15 ~ 0.45
Al 
 ≤ 0.05

Mechanical Properties
Condition of heat treatment Tensile
Rm(MPa)
Yield
Rp0.2(MPa)
Elongation
A(%)
Reduction in cross
section on fracture
Z (%)
Impact
AKV/AKU(J)
Brinell
Hardness(HBW)
Annealed - - - - - -
HT 1136℃~1163℃, ≥677℃ X 2h tempered ≥ 795 ≥ 515 ≥ 15.0 ≥ 50.0 ≥ 35 ≤ 277

Forms and Shapes:
Round bar (Diameter): 5.5 mm to 700 mm
Wire rod (Diameter): 0.10 ~ 16mm
Square bar / Flat bar: 5mm to 550mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 650mm X L (or in coil form)
Forged ring: OD200 ~ 1500mm X ID150 ~ 1250mm X H20 ~ 1250mm
Heavy/middle plate via hot rolled: T50 - 200mm X W80- 1200mm X L1000-3000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM. 
Length: Fixed length or random length or based on the customer's special requirement.

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