15Kh11MF Heat-Resistant Steel Products

Designation

Name The value
Designation GOST Cyrillic 15Х11МФ
Designation GOST Latin 15X11MF
Transliteration 15H11MF
By chemical elements 15Cr11MoV
Name The value
Designation GOST Cyrillic 1Х11МФ
Designation GOST Latin 1X11MF
Transliteration 1H11MF
By chemical elements 1Cr11MoV

Description

15Kh11MF grade identification

15Kh11MF is a regional designation for a martensitic heat-resistant alloy steel. Legacy drawings and supplier documents may show variants such as 15KH11MF, 15Х11МФ or 1Kh11MF. The grade name must be accompanied by the governing standard and required condition because transliteration alone does not define chemistry, heat treatment, mechanical properties or acceptance tests.

Product forms and applications

The grade is encountered in specifications for turbine components, rings, forgings and other parts intended for elevated-temperature service. Sourcing can be reviewed for round bar, rod, forgings, rings, billets and cut blanks, depending on section, condition and quantity. The purchaser must define the design temperature and required properties for the finished component.

Heat treatment and testing

State the supplied condition and any purchaser-controlled heat-treatment route. Include hardness, tensile or impact requirements, macrostructure or ultrasonic examination, surface quality, straightness, machining allowance and material test report. Website descriptions do not replace the drawing, product standard or heat-treatment specification.

U.S. sourcing overview

This page supports U.S. buyers searching for 15Kh11MF steel products and verified purchasing information. Evek LLC reviews the complete requirement before confirming a sourcing route, availability, origin, minimum quantity or certification.

Specification and substitution

Do not approve an ASTM, AISI, EN or DIN alternative from a short cross-reference alone. Chemistry limits, heat treatment, creep or elevated-temperature properties, toughness, product-form tolerances and inspection rules can differ. Any substitute requires purchaser or engineering approval.

Information required for a quote

Send 15Kh11MF with the original spelling, governing standard and revision, bar, rod, forging, ring or blank form, dimensions, condition, quantity, target properties, testing, material certificate, permitted alternatives and U.S. delivery ZIP code.

Related products and resources

Review tool steel products, 9KhVG bar and forgings, international steel equivalents, or contact Evek LLC for assistance.

Request a U.S. quote

Evek LLC serves customers throughout the United States. Typical delivery is 2-3 weeks, subject to grade, specification, form, dimensions, quantity, production route and availability.

Contact Evek LLC with the complete requirement and U.S. delivery ZIP code.

Standards

Name Code Standards
Classification, nomenclature and General rules В30 GOST 5632-72
Bars and shapes В32 GOST 5949-75, GOST 18968-73, GOST 19442-74, TU 14-11-245-88
Blanks. Of the workpiece. Slabs В31 OST 108.020.03-82, OST 3-1686-90
Processing of metals by pressure. Forgings В03 TU 0306.018-80

Chemical composition

Standard C S P Mn Cr Si Fe Cu V Ti Mo W
GOST 5632-72 0.12-0.19 ≤0.025 ≤0.03 ≤0.7 10-11.5 ≤0.5 Rest ≤0.3 0.25-0.4 ≤0.2 0.6-0.8 ≤0.2
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Bars and strip hot rolled and forged GOST 18968-73. Normalization or annealing at 1050-1100 °C, air cooling or oil + Leave in 660-770 °C, air cooling
590-755 ≥740 ≥15 ≥50 ≥588 229-269
Bars hot rolled and forged according to GOST 5949-75. Quenching in oil with 1030-1060 °C + Vacation at 700-740 °C, cooling in oil
≥490 ≥690 ≥15 ≥55 ≥588 -
Contoured rods (g/K, x/K and x/t for steam turbine blades; x/a and x/t for coupling blades of steam turbines) according to GOST 19442-74. Annealing in air or in oil with 1050-1100 °C + Vacation at 660-770 °C, air cooling (specified strength)
539-656 686-882 ≥15 ≥50 ≥588 217-255
588-754 735-931 ≥15 ≥50 ≥588 229-269
666-784 813-980 ≥13 ≥40 ≥392 255-286

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number

Physical characteristics

Temperature Е, HPa r, kg/m3 l, W/(m · °C) a, 10-6 1/°C С, J/(kg · °C)
20 228 7850 - - -
100 222 - - 103 500
200 213 - 244 106 525
300 205 - 261 108 567
400 193 - 272 113 630
500 180 - 276 117 700
600 - - 28 12 800
700 - - - 122 -
800 - - - 124 -

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity

Technological properties

Name The value
Weldability difficult weldability