ASTM A540 Gr.B23 Stockist, ASTM A540 Gr.B23 Equivalent Steel

ASTM A540 Gr.B23
2016-04-26 09:52:22   Origin:   Remark:0 Click:

A540 Grade B23 is a middle carbon Nickel - chromium - Molybdenum base structural steel. Fabricated from Steelmaking, ESR melted, Hot forging / rolling, Heat treatment, Cold finished.. Technical specification ASTM A540.
TECHNICAL DATA SHEET -  ASTM A540 Gr.B23

MATERIAL CATEGORY - alloy steel bolting materials for special applications
MATERIAL STANDARDS - ASTM A540
MATERIAL TYPE - E4340H
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS -  BV
CHEMICAL COMPOSITION (mass weight %)
C (%):    0.37 ~ 0.44
Si (%):    0.15 ~ 0.35
Mn (%):  0.60 ~ 0.95
P (%)≤:  0.025
S (%)≤:  0.025
Cr (%):   0.65 ~ 0.95
Ni (%):   1.55 ~ 2.00
Mo (%):  0.20 ~ 0.30
V (%):     -
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Bar size: 2 inches
Tensile strength σb≥/MPa: 830
Yield strength σs≥/MPa: 726
Elongation δ5≥(%): 15
Reduction of area ф ≥ (%):    50
Surface hardness: HB 248 ~ 311
MAIN FEATURES AND MELTING PROCESS
The
steels shall be manufactured by melting process  EAF + LF + VD, IFF + ESR Melted and shall be finished by hot-rolled / hot forged / cold finished.
Forgings may be furnished in one of the following conditions: stress relieving; annealing; solution treatment; solution treatment and ageing; normalizing; normalizing and tempering; or quenching and tempering. Heat and product analyses shall be employed to assess the conformance of steels with required chemical compositions.
Forgings shall examined by tension and Charpy impact tests and conform to required mechanical properties such as yield strength, tensile strength, elongation, reduction of area, minimum room-temperature Charpy V-notch energy absorption, maximum annealed hardness, and section size capability. Nondestructive tests, such as magnetic particle, liquid penetrant, and ultrasonic inspection procedures, shall also be performed.
TYPICAL APPLICATIONS
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
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 5.5mm to 550mm
Square bar / Flat bar:   3mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Heavy/middle plate via hot rolled: T40 - 400mm X W50 - 1000mm X L1000 - 12000mm
Forging piece: stepped shafts, and other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers. Email us:
sales@ccsteels.com.

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