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40Cr SCr440 41Cr4(1.7035) 5140 Steel Pipe

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  • 40Cr

  • Qilu

Product Description

40Cr SCr440 41Cr4(1.7035) 5140 Steel Pipe


1: AISI 40Cr Steel Introduction

  GB 40CR alloy Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality low carbon,Low alloy chromium, molybdenum, nickel case hardening steel. Oil Quenched & Tempered Hardness is 28-34 HRc. GB 40CR steel Annealing delivery hardenss less than 250HB.40CR With a lower carbon content range, So GB 40CR alloy steel have good weldability. 

                        (1) (46)

40Cr steel Stock in warehouse


2: A29 Quality Standard

ASTM-A29-05 ENG Standard-Specification-Steel-Bars-Carbon-and-Alloy-Hot-Wrought-General-Requirements.pdf


3: AISI 40Cr Steel Equivalent

Country Japan Germany Britain USA China Australia
Standard JIS G4105 DIN EN 10250 BS970 ASTM A29 GB/T 3077 AS 1444
Grade SCr440
41Cr4(1.7035)
/ 5140
40Cr
/


4: AISI 40Cr Steel Chemical Composition

Grade C Si Mn P S Cr Ni Cu
5140 0.38~0.45 0.35-0.43 0.6~0.9 0.025 0.025 0.9~1.2 0.12 0.017
SCr440
0.38 - 0.43 0.15 - 0.35
0.6~0.9 0.03
0.03
0.9~1.2 0.25 0.3
41Cr4(1.7035)
0.38 - 0.45
0.4
0.6 - 0.9
0.025
0.035
0.9 - 1.2
/ /
40Cr
0.37~0.44 0.17~0.37
0.50~0.80
0.030
0.030
0.80~1.10
/ /


5: AISI 40Cr Steel Mechanical Properties

   The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.


6: AISI 40Cr Steel Overviews

Size Round Dia 6-1200mm
Plate/Flat/Block Thickness
6mm-500mm
Width
20mm-1000mm
Heat treatment Normalized ; Annealed ; Quenched ; Tempered
Surface condition Black; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery condition Forged; Hot rolled; Cold drawn
Test Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.
Payment terms T/T;L/C;/Money gram/ Paypal
Trade terms FOB; CIF; C&F; etc..
Delivery time 30-45 days


7: AISI 40Cr Steel Application

  40Cr alloy steels are used for the fastening piece, machine elements, sleeve gear Extrusion dies and diecasting for alumium, Mandgnesium allay mostly, for copper alloy could use mechaincal press forhing of steel, gears, shafts, spindles, crankshafts, sleeves, pins, connecting rods, screws, nuts, intake valves, etc.


8: AISI 40Cr Steel Heat Treatment

Hardening, which takes place in the range 788 °C to 816 °C

Stress Relieving, which takes place in the range 677 °C to 927 °C

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