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P550
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Alloy P550, a High Content of Chromium-Manganese-Nitrogen Non-magnetic Steel, P550 Round bar, flat bar, hollow bar, Cold machined

TECHNICAL DATA SHEET - Nonmagnetic Alloy P550

MATERIAL CATEGORY - a special Nonmagnetic, austenitic Mn-Cr-steel with a high nitrogen content.

MATERIAL SPECIFICATIONS - DIN SEW 390 (1991)

OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV

CHEMICAL COMPOSITIONS (mass weight - %)

Carbon, C (％): ≤ 0.06
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): 20.5 ~ 21.6
Phosphorus, P (％)≤: 0.035
Sulfur, S (％)≤: 0.020
Chromium, Cr (％): 18.3 ~ 20.0

Nickel, Ni (％): ≥ 1.40
Molybdenum, Mo (％): ≥ 0.50

Nitrogen, N (％): ≥ 0.55

HOT WORKING, HEAT TREATMENT CYCLE

Hot working temperature: 1150 ~ 950℃

Quenching or solution treatment temperature: 1020~1120℃, water & oil cooled

Tensile strength, Rm ≥ MPa: 1035
Yield strength, Rp0.2 ≥ MPa: 900
Elongation, A5 ≥ (％): 20.0
Impact strength, Akv ≥ J: 80

Hardness: HB 350 ~ 430 (cold worked)

PRODUCT DESCRIPTION
The alloy is usually produced by AOD + BEF / EAF followed by electroslag refining (ESR) / VAR if necessary for special purpose.
PRODUCT FORMS & DIMENSIONS
Round bar (diameter): 60 to 450mm
Square bar / flat bar: 10mm to 300mm

Length: random length, fixed length, or based on the customer's special requirement.

Forging piece: stepped shafts, other different shapes based on OEM.

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

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