grade C ;grade D;grade K.
Sucker rod & pony rod
meet with API 11B
material:
grade C: SSYD-1 (similar AISI1526)
grade D: 30CrMoA (similar AISI 4130)
grade K: 20Ni2MoA (similar 4620)
Mechanical properties
grade |
Yield strength Rel
(Mpa) |
Tensile strength
Rm(Mpa) |
Percentage
Elongation A(%) |
Contraction percentage
of Area Z(%) |
Impact toughness |
C | ≥ 414 | 620-793 | ≥ 12 | ≥ 55 | ≥ 70 |
D | ≥ 620 | 794-965 | ≥ 10 | ≥ 50 | ≥ 58.8 |
TO | ≥ 414 | 620-793 | ≥ 12 | ≥ 55 |
≥ 70 |