17crnimo6 alloy structural steel(1.6587,18CrNiMo7-6,4317)
Hot forged steel round bar.
Specification: 17CrNiMo6(1.6587)
Chemical compostion: According EN10084
C: 0.15-0.20; Mn: 0.60-0.70; Si: 0.20-0.35; P<=0.015; S<=0.010;
Cr: 1.60-1.80; Mo: 0.25-0.35; Ni: 1.40-1.70; Cu<=0.20; Al: 0.020-0.050;
[H]<=2ppm; [N]: 0.006-0.018; [O]<=20ppm; Ca<=0.0015; Ti<=0.0015;
Al/N: 2.0-3.5; Sn<=0.030; Sb<=0.005.
Delivery condtion: Hot forged+Annealed+Rough turned.
Length: 4.0m-5.8m
Size: 90mm-800mm
Steel ingot: EAF+LF+VD
Surface Hardness<=229BHN,
Ultrasonic test: Sep1921 Class D/d.