Technical Specification

Technical

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BS 970 708M40
(EN 19A)

GENERAL:
A HIGH TENSILE CHROMIUM MOLYBDENUM STEEL WITH HIGH DUCTILITY AND GOOD SHOCK RESISTING PROPERTIES.

USES:
SUITABLE FOR GEARS,HIGH TENSILE STUDS,SHAFTS ETC.

CHEMICAL ANALYSIS:
C SI MN S P
0.36/0.44 0.10/0.35 0.70/1.00 0.040 MAX 0.035 MAX
Cr Mo
0.90/1.20 0.15/0.25
TYPICAL MECHANICAL PROPERTIES: (EXAMPLE ONLY)
(EXAMPLE IS FOR "T"CONDITION)
TEN. STRENTH YIELD STRESS ELONG BHN
949 N/MM2 820 N/MM2 18% 277

HEAT TREATMENT & CONDITION
COMMERCIALY AVAILABLE "ANNEALED","S"AND"T" CONDITION.

SECTIONS
COMMERCIALY AVAILABLE IN BLACK ROUNDS,SQUARE BILLET , BRIGHT ROUNDS AND HEXAGONS.

RELATED SPECIFICATIONS
SAE 4140 , WERKSTOFF 1.7225 , KURZNAME 42CrMo4.

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