X7CrNiAl17-7
2026-08-07 09:30:00 Origin： Remark：0 Click：
Specifications X7CrNiAl17-7, 17-7PH round bar, plate, properties from steelmaking, hot forging, hot rolled, heat treated, cold worked
TECHNICAL DATA SHEET - X7CrNiAl17-7
MATERIAL CATEGORY: martensitic and precipitation hardening steel
PRODUCT DESCRIPTION
The alloy is usually produced by AOD / EAF followed by electroslag refining (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.
Bars are usually supplied black / bright in the annealed condition.
Final heat treatment: solution + aged.
The alloy is usually produced by AOD / EAF followed by electroslag refining (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.
Bars are usually supplied black / bright in the annealed condition.
Final heat treatment: solution + aged.
MATERIAL SPECIFICATION - DIN EN 10088-1, 10297,10272,10312, DIN EN 10088-5(2005)
TYPICAL CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): ≤ 0.09
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 16.0 ~ 18.0
Nickel, Ni (％): 6.50 ~ 7.80
Molybdenum, Mo (％): -
Alumium, Al (％): 0.70～1.50
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 16.0 ~ 18.0
Nickel, Ni (％): 6.50 ~ 7.80
Molybdenum, Mo (％): -
Alumium, Al (％): 0.70～1.50
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: solution treatment
Tensile strength, Rm / MPa: 850 max
Yield strength, Rp0.2 ≥ MPa: -
Elongation, A5 ≥ (％): -
Reduction of area, Z ≥ (％): -
Impact strength, Akv ≥ J: -
Yield strength, Rp0.2 ≥ MPa: -
Elongation, A5 ≥ (％): -
Reduction of area, Z ≥ (％): -
Impact strength, Akv ≥ J: -
Hardness HBS30: 255 max.
MECHANICAL PROPERTIES ABOVE ROOM TEMPERATURE
Hot forming temp : 1150 ~ 900 Deg.
Heat treatment temperature and cooling methods|annealing: -
Heat treatment temperature and cooling methods|quenching: 1060~1080 water / air cooled
Heat treatment temperature and cooling methods|tempering: -
Condition: solution treatment
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 100: -
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 200: -
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 200: -
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 300: -
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 400: -
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 400: -
High temperature yield strength σ0.2/MPa≥/MPa，at below temp / ℃ | 500: -
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.
TYPICAL APPLICATIONS
Medical equipment.
Chemical equipments.
Mechanical parts used in the condition of corrosion resistance.
Bolt and nut.
Pressure vessel.
Mechanical parts used in the condition of corrosion resistance.
Bolt and nut.
Pressure vessel.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers - E-mail: sales@ccsteels.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers - E-mail: sales@ccsteels.com
PROFILE AND DIMENSIONS
Round bar & rod & disc (diameter): 6.0 to 900 mm
Square bar & Flat bar: 3mm to 600 mm
Round bar & rod & disc (diameter): 6.0 to 900 mm
Square bar & Flat bar: 3mm to 600 mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate: T6 ~ 400 X W20 ~ 1200 X L1000 ~ 5000 mm
Heavy/middle plate: T6 ~ 400 X W20 ~ 1200 X L1000 ~ 5000 mm
Sheet steel via cold rolled: T0.5 ~ 6 X W20 ~ 1000 X L1000 ~ 2000 mm
Steel strip via cold rolled: T0.3 ~ 3 X W5 - 200 X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
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