17CrNiMo6, 1.6587

　　Chemical composition:

　　C:0.15/0.20; Si:0.15-0.35; Mn:0.60/0.90; P:Max 0.025; S:Max 0.035

　　Cr:1.50/1.80,Mo:0.25/0.35; Ni:1.40/1.70; Al:0.02/0.05; N:0.006/0.018;

　　Standard: EN10084

　　Grain size: above grade 5

　　Annealing Hardness: Maximum HB217

　　Delivery status: forging+normalizing/annealing+roughing+quenching+tempering (quenching and tempering).

　　Or we can provide forged black leather

　　Specifications: 90mm~800mm

　　Length: above 4.0m (fixed length delivery is acceptable).

　　Flaw detection: utsaccording to sep1921c/c, d/d, e/e, a388 or gb/t6402