15-5PH is a Precipitation Hardening Martensitic Stainless steel with an addition of Nb/Cu elements. Grade S15500 Combines High Strength, hardness (up to HRC40), and corrosion resistance. Mechanical properties at RM can be optimized with final age treatment.
CHEMICAL COMPOSITION (Mass weight - %)
C (%): ≤ 0.07, Si (%): ≤ 1.00, Mn (%): ≤ 1.00
P (%)≤: 0.040, S (%)≤: 0.030
Cr (%): 14.0 ~ 15.5, Ni (%): 3.50 ~ 5.50, Mo (%): -
Cu (%): 2.50 ~ 4.50, Nb+Ta (%): 0.15 ~ 0.45
MECHANICAL PROPERTIES UNDER FINAL HEAT TREATMENT
Form: Bar, forge piece
Condition: H900
Tensile strength, σb/MPa: 1310
Yield strength, σ0.2/MPa: 1170
Elongation, δ (%): 10.0
Reduction of area, ψ (%): 35
Harndess: HRC: ≥ 40
Form: Bar, forge piece
Condition: H925
σb/MPa: 1170
σ0.2/MPa: 1070
δ (%): L-10.0
ψ (%): L-38.0
Hardness HRC: ≥ 38
Form: Bar, forge piece
Condition: H1025
σb/MPa: 1070
σ0.2/MPa: 1000
δ (%): 12.0
ψ (%): 45
Hardness HRC: ≥ 35
Form: Bar, forge piece
Condition: H1075
σb/MPa: 1000
σ0.2/MPa: 860
δ (%): 13.0
ψ (%): 45.0
Hardness HRC: ≥32
Form: Bar, forge piece
Condition: H1100
σb/MPa: 965
σ0.2/MPa: 795
δ(%): 14;10
ψ(%): 45;29
HRC: ≥31