K91231 datasheet,K91231 chemical,K91231 heat treatment

K91231
2020-09-29 17:19:23   Origin:   Remark:0 Click:

Description K91231 datasheet, K91231 Chemical, K91231 Properties from Steelmaking, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic flaw detection test, Cold working or Machined. All of these materials conform to Military standard, nuclear power. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
TECHNICAL SPECIFICATIONS - UNS K91231

MATERIAL FORMS: round bar, flat bar, square bar, forge piece, ring, valve body, plate
MATERIAL TYPE: Aerospace Material Specification steel
Official Test Certificate Report: issued by TUV - SGS -  BV
CHEMICAL COMPOSITION (WEIGHT %)
C (%):    0.11 ~ 0.15
Si (%):   0.10 ~ 0.25
Mn (%): 0.10 ~ 0.35
P (%):    ≤ 0.015
S (%):    ≤ 0.010
Cr (%):   4.00 ~ 4.25
Ni (%):   3.20 ~ 3.60
Mo (%):  4.00 ~ 4.50 
V (%):    1.11 ~ 1.33
Co (%):  ≤ 0.025
W (%):   ≤ 0.015
Cu (%):  ≤ 0.010
MECHANICAL PROPERTY AND HARDNESS
Quenching temperature /℃: 1095 ~ 1107, oil
Tempering temperature /℃: 520 ~ 552
Tensile strength,σb/≥ MPa: 1100MPa
Yield strength, σ0.2/≥ MPa: -
Elongation, δ ≥(%): -
Reduction of area, ф ≥(%): -
Hardness in annealed condition: HB 255 max.
PRODUCT DESCRIPTION
The
alloy is usually produced by VIM followed by Vacuum Arc Melting (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' specific requirements.
Round bar / Wire rod (Diameter): 5.5mm to 300mm
Square bar / Flat bar: 3mm to 400mm
Length: Fixed length or random length or based on the customer's special requirement.
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
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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