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Type: Alloy Steel Bar
Special Use: Mold Steel
Alloy Or Not: Is Alloy
Application: Structural Steel Bar
Technique: Forged
Model Number: AISI 4340
Brand Name: Kangheng
Place of Origin: China (Mainland)
Dimensions: 16-500mm
Standard: AISI,ASTM,BS,DIN,GB,JIS
Steel Grade: Forged Rond Steel AISI 4340
Product Name: Structural Alloy Forging Carbon Tool Steel 4340
Surface treatment: Black/Grinded/Machined/Turned
Production route: EF/EAF+LF+VD/ESR
Quality inspection: UT, Chemical test, Microstructure, Physical properties etc.
UT test standard: SEP1921-84 class3 C/c to D/d
Certification: ISO9001
Service: Free Sample and 24 Hours Online
Delivery Condition: Hot Forged or Rough Machined
Heat Treatment: Annealing/Quenching/Tempering

Specifications

Size of 4340  (can be sustomized)
Round bar Diameter(mm): Hot Forgeed:φ50-500 Length(mm):2500-5800
Hot Rolled:φ≤50
Steel plate Thickness(mm): Hot Forged: ≥20 Width(mm): 20-810
Hot Rolled: ≤20mm


Steel Grade
GB DIN W-Nr AISI JIS BOHLER Ss14
40CrNiMoA 40NiCrMo22 1.6582 4340 SACM639 / /

GB 40CRNIMOA/ DIN 40NICRMO22/  W-Nr 1.6582/AISI 4340/JIS SACM639
Characteristics:
   1.Low alloy steel containing nickle,chromium and molybdenum;
   2.It is known for its toughness and capability of developing high strength in the heat treated condition.
Applications:
  Typical applications are for structural use ,such as aircraft landing gear ,power transmission geras and shafts
  and other structural parts.