X5CrNiCuNb16-4 ESR Forgings - Round bar - Stockist

X5CrNiCuNb16-4 ESR
2026-03-12 15:54:00   Origin:   Remark:0 Click:

EN 10088-3 (2005) specification X5CrNiCuNb16-4 ESR technical data sheet, X5CrNiCuNb16-4 round bar, flat bar, rod, disc - steelmaking, ESR remelted, hot bloomed, forged
Official test report: issued by TUV - SGS -  BV

TECHNICAL DATA SHEET - EN X5CrNiCuNb16-4
Material category: 15.5Cr - 4.0Ni - 3.5Cu base steel
Steel type: precipitation hardening series
Material specifications: BS EN 10083-3 (2005)
Typical chemical compositions (mass weight %)
Carbon, C (%): ≤ 0.055
Silicon, Si (%): ≤ 0.40
Manganese, Mn (%): ≤ 0.60
Phosphrous, P (%): ≤ 0.030
Sulfur, S (%): ≤ 0.010
Chromium, Cr (%): 15.0 ~ 16.0
Nickel, Ni (%): 3.80 ~ 4.50
Molybdenum, Mo (%): ≤ 0.60
Niobium, Nb (%): 5×C ~ 0.45
Copper, Cu (%): 3.00 ~ 3.80
MECHANICAL PROPERTIES BASED ON THE DIFFERENT HEAT TREATMENT CONDITIONS
Condition of thermal treatment: AT (solution treatment)
Hardness ≤ HBS: 360
Yield strength σ0.2 ≥ MPa: -        
Tensile strength σb / MPa:  ≤1200
Elongation δ5 ≥ (%):  - 
Elongation δ (transversal) ≥ (%):   -      
Impact absorbing power Akv ≥ J : -
Condition of thermal treatment: P800
Hardness ≤ HBS: -
Yield strength σ0.2 ≥ MPa: 520        
Tensile strength σb / MPa:  800~950
Elongation δ5 ≥ (%): 18.0   
Impact absorbing power Akv ≥ J : 75
Condition of thermal treatment: P930
Hardness ≤ HBS: -
Yield strength σ0.2 ≥ MPa: 720        
Tensile strength σb / MPa:  930~1100
Elongation δ5 ≥ (%):  -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 δ5 ≥ (%):  12
Impact absorbing power Akv ≥ J : -
Condition of thermal treatment: P1070
Hardness ≤HBS: -
Yield strength σ0.2 ≥ MPa: 1000        
Tensile strength σb / MPa:  1070~1270
Elongation δ5 ≥ (%):  10
Impact absorbing power Akv ≥ J : -
PRECIPITATION HARDENING STAINLESS STEEL APPLICATION
Primary structures are austenite or martensite and possess high strength, corrosion resistance, oxidation resistance and superior hot working performance.
The popular steel grades of Precipitation hardening-stainless steel are BS X5CrNiCuNb16-4, BS X7CrNiAl17-7, BS 1.4568, BS X5CrNiMoCuNb14-5,17-4PH, S17400, ASTM 630, SUS630, STS630, which are normally through precipitation hardening (also known as age-hardening) treatment practice.
Those materials are widely used in manufacturing the high strength, anti-corrosive forge piece for planes, gas turbine and other machined parts.
PRODUCT DESCRIPTION
The
alloy is usually produced by AOD / VOD / 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 treatment + aged
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. 
PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 950 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Heavy / middle plate via hot rolled: T6 ~ 400 X W20 ~ 1500 X L1000 ~ 12000 mm
Sheet steel via cold rolled: T0.5 ~ 6 X W10 ~ 1000 mm X L1000 ~ 2000 mm
Steel strip via cold rolled: T0.3 ~ 3 X W10 ~ 200 X L mm (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.

TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email:
sales@ccsteels.com 

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