JIS SCr440 / BS 41Cr4 (1.7035)/ 40Cr /ASTM 5140 Alloy structural steel

40cr tool steel 1.5140/1.7035/40Cr/41Cr4 2.hot rolled,annealing or pre-hardened 3.flat/round bar 4.black surface

JIS SCr440 / BS 41Cr4 (1.7035)/ 40Cr /ASTM 5140 Alloy structural steel

1. Size: Round steel bar: Dia. 8-10000mm Flat steel bar: 10-600*205*1500mm Length: <12m 2. Machine Capability Tensile strength (N/mm2Mpa): >=835 Elongation %: >=10 Yield strength: >=540 Hardness: HBS<=179 Reduction of area: >=40% . 3. Machinability Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition. 4. Welding Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.

 5. Process: EAF+LF+VD+ Forged+ Heat Treatment (Annealed, A Normalized, Q+T) 6. Application: Extrusion dies and die-casting for alumium, Mandgnesium allay mostly, for copper alloy could use mechaincal press forhing of steel 7. Inspection 100% Ultrasonic according to the test standards: SEP1921-84, GR. 3 CLASS C/C

Chemical Composition(for reference only) (%)
C	Si	Mn	Cr	Ni	P	S	Cu
0.37~0.44	0.17~0.37	0.50~0.80	0.8~1.1	≤ 0.03	≤ 0.035	≤ 0.035	≤ 0.30

JIS SCr440 / BS 41Cr4 (1.7035)/ 40Cr /ASTM 5140 Alloy structural steel