S17400 / 630 / 17-4PH
2014-11-13 20:31:26 Origin： Remark：0 Click：
17-4PH / Grade 630 precipitation hardening steel - 17-4PH Material Properties from steelmaking, forging, rolling, heat treatment, cold working. We also possess advanced precision machining equipments for further processing
S17400 Forged multidiameter shafts
Diameter: 85 - 350mm
Condition of delivery: solution treatment and aging treatment
CHEMICAL ELEMENT (weight % )
C (％): ≤ 0.07
Si (％): ≤ 1.00
Mn (％): ≤ 1.00
P (％)≤: 0.040
S (％)≤: 0.030
Cr (％): 15.5 ~ 17.5
Ni (％): 3.00 ~ 5.00
Mo (％): —
Others (％): Cu 3.00 ~ 5.00, Nb 0.15 ~ 0.45
Si (％): ≤ 1.00
Mn (％): ≤ 1.00
P (％)≤: 0.040
S (％)≤: 0.030
Cr (％): 15.5 ~ 17.5
Ni (％): 3.00 ~ 5.00
Mo (％): —
Others (％): Cu 3.00 ~ 5.00, Nb 0.15 ~ 0.45
Grade 17-4PH / SS630 is usually taken a special steelmaking technique by BEF & AOD followed by electroslag remelting (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Major applications and features for this type of grade
Engine components.
High strength and boat propeller shafts.
Plastic moulding dies
Corrosion resistant & Heat resistant quality & Polishing performance
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Major applications and features for this type of grade
Engine components.
High strength and boat propeller shafts.
Plastic moulding dies
Corrosion resistant & Heat resistant quality & Polishing performance
Heat treatment practice
Heat treatment is only suitable for specific grades of stainless steel. When heat treating a stainless the hardening temperatures, including rate of heating, cooling and soaking times will vary due to several factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult with the heat treatment provider for whole guidance on heat treatment of stainless steel grades. We are delighted to help to work with you the special heat treatment based on your special requirements.
Mechanical properties under the different heat treatment
Condition of thermal treatment: AT (Solution treatment)
Hardness ≤HBS: 360
Yield strength σ0.2≥/MPa: -
Tensile strength σb/MPa: ≤ 1200
Elongation δ ≥(％): -
Elongation δ(transversal )≥(％): -
Impact absorbing power Akv≥/J : -
Condition of thermal treatment: P930
Hardness ≤HBS: -
Yield strength σ0.2≥/MPa: 720
Tensile strength σb/MPa: 930~1100
Elongation δ ≥(％): -16
Impact absorbing power Akv≥/J : 40
Condition of thermal treatment: P960
Hardness ≤HBS: -
Yield strength σ0.2≥/MPa: 790
Tensile strength σb/MPa: 960~1160
Elongation δ ≥(％): 12
Impact absorbing power Akv≥/J : -
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