Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 41cralmo7-10 forged steel round bars in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
41CrAlMo7-10 Forged / Forging Steel Round Bars
Product Description
41CrAlMo7-10 Forged/Forging Steel Round Bars (1.8509)
Chemical Composition:
Process: EAF/LD+LF+VOD+ hot Forged/hot rolled+Heat Treatment(optional)
SIZE RANGE:
Round: Dia 10mm - 1200mm
SURFACE FINISHES:
Black, grinded, turned
Ultrasonic test: According to SEP 1921-84
Soft Annealing
Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 248.
Hardening
Harden from a temperature of 870-930oC followed by oil/polymer or water quenching.
Tempering
Tempering temperature: 580-700oC.
Forging
Hot forming temperature: 1050-850oC.
Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.
Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
| Britain | France | Italy | Belgium | Sweden | Spain | |
| Germany | EN 41B B.S. 905M39 | AFNOR 40CAD6,12 | UNI 41CrAlMo7 | NBN 41CrAlMo7 | SS 2940 | UNE41CrAlMo7 |
Chemical Composition:
| Grade | C | Si | Mn | Cr | P | S | Mo | Al |
| 1.8509 | 0.38-0.45 | 0.40 max | 0.40-0.70 | 1.50-1.80 | 0.025 max | 0.035 max | 0.20-0.35 | 0.80-1.20 |
SIZE RANGE:
Round: Dia 10mm - 1200mm
SURFACE FINISHES:
Black, grinded, turned
Ultrasonic test: According to SEP 1921-84
Soft Annealing
Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 248.
Hardening
Harden from a temperature of 870-930oC followed by oil/polymer or water quenching.
Tempering
Tempering temperature: 580-700oC.
Forging
Hot forming temperature: 1050-850oC.
Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.
Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
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