This specification supplies engineers and designers with:
a
Poppet valve nomenclature
b
Poppet valve alloy designations
c
Chemical compositions of poppet valve alloys
d
A guide to valve alloy metallurgy and heat treatments
e
General information on properties of valve alloys
f
A guide to the application of valve alloys
g
A description of valve design and construction, and their relation to valve alloy selection
h
Valve gear design considerations that affect valves
Rationale
This revision of SAE J775 was intended to align SAE standard with ISO standard in order to facilitate global applicability of the standard high temperature alloys and valve materials. Nearly 90% of the information from the current SAE standard and UNS designations have been reproduced with comparison tables incorporating equivalent and or near equivalent DIN and ISO 683-15 designations. Text revisions have been based on current worldwide design application trends and comparison of properties in the tables. Unlike the ISO document, this document applies to materials and properties applied in the design and applications of internal combustion engine valves and does not cover the raw material properties or procurement conditions.
CURRENT NORTH AMERICAN VALVE ALLOYS (MARTE INSITIC STEELS)
TABLE 1B
(OTHER) VALVE ALLOYS (MARTENSITIC STEELS)
TABLE 2A
CURRENT NORTH AMERICAN VALVE ALLOYS (AUSTENITIC STEELS)
TABLE 2B
OTHER VALVE ALLOYS (AUSTENITIC STEELS)
TABLE 3A
CURRENT VALVE ALLOYS (SUPERALIOYS)
TABLE 3B
OTHER VALVE ALLOYS (SUPERALLOYS)
TABLE 3C
OTHER VALVE ALLOYS (TITANIUM)
TABLE 4A
CURRENT VALVE ALLOYS (FACING ALLOYS)
TABLE 4B
CURRENT OTHER VALVE ALLOYS (FACING ALLOYS)
TABLE 5
REFERENCE VALUES FOR THE MECHANICAL PROPERTIES AT ROOM TEMPERATURE (FOR DIAMETERS UP TO 40 MM) (APPLICABLE TO THE REFERENCE HEAT-TREATMENT CONDITION IN ACCORDANCE WITH )
TABLE 6
REFERENCE VALUES FOR THE TENSILE STRENGTH AT ELEVATED TEMPERATURES
TABLE 7
REFERENCE VALUES FOR THE 0.2% - PROOF STRESS AT ELEVATED TEMPERATURES
TABLE 8
REFERENCE VALUES FOR THE CREEP STRENGTH AFTER 1000 H (APPLICABLE TO THE REFERENCE CONDITION IN ACCORDANCE WITH
TABLE 9
REFERENCE DATA FOR HOT FORMING AND HEAT TREATING
TABLE 10
REFERENCE DATA RELATING TO PHYSICAL PROPERTIES (APPLICABLE TO THE REFERENCE CONDITION IN ACCORDANCE WITH )
The Metals Technical Committee (MTC) controls specifications for Ferrous and Non-Ferrous: Metallic Wrought Products, Cast & Sintered Products, Metal Properties & Processes, and Metal Test Procedures. The MTC oversees standards to establish uniform procedures that: 1) establish a common language for the industry to review materials and processes through standards, 2) are reviewed and updated on a regular 5-year basis with coordination to other industry specifications, and 3) creates a common industry interface for technical discussions. The MTC ensures that all standards are developed with qualified personnel to perform respective tasks, meets at least once a year to provide relevant updates to current specifications, and assesses whether new standards are needed by industry. The committee also maintains the public web pages by reviewing and updating the information necessary. The MTC shall report to the Materials Processes and Parts Council (MPPC) on a biannual basis. Participants in the SAE Metals Technical Committee include representatives from OEMs, suppliers, consulting firms, government, and other interested parties.
* Redlines comparisons are available for those standards
listed in the Revision History that contain a radio button. A
redline comparison of the current version against a revision is
accomplished by selecting the radio button next to the standard and
then selecting 'compare'. At this time, Redline versions only exist
for some AMS standards. SAE will continue to add redline versioning
with ongoing updates to SAE MOBILUS.
View/Annotate
Content Loading, Please Wait
Document Preview
Content Loading, Please Wait
Document Comparison
Content Loading, Please Wait
Download
A list of downloadable items.
Product Code
Document Title
File Type
Download
J775_200411
Engine Poppet Valve Information Report
Export Metadata
This modal will allow the user to download citation information or export specific fields of data into one of three file formats: Excel, comma-separated values, or text.
You are currently not logged into your Dashboard account, which is required for annotating.
Please select Login to login or register for the Dashboard. Select Continue to view the content without the ability to annotate.
Redline Warning
You are currently not logged into your Dashboard account, which is required for annotating.
Please select Login to login or register for the Dashboard. Select Continue to view the content without the ability to annotate.
Data Set Warning
Engine Poppet Valve Information Report
SAE Journal Subscriptions are available in a variety of options, which include electronic, electronic with back file, and archive. For detailed information and options, please complete the following:
Content Request
Check My Access!
You may already have access to the Ground Vehicle Standard, Engine Poppet Valve Information Report
Subscription Access
If you have Subscription Access with a username and password, please login below.
Institutional Login
If you have Institutional Access to SAE MOBILUS, using a predetermined organizational login utilizing single-sign-on (Shibboleth), please login below. To request institutional access to SAE MOBILUS, please complete the institutional subscription information form.
Purchase
If you do not have access to SAE MOBILUS via username/password or institutional access, you can still purchase the Ground Vehicle Standard, Engine Poppet Valve Information Report.
Search Tips: Search Operators:AND, OR, NOT; Wild Cards; Using Quotes
SAE MOBILUS® Search Tips
Please note: All terms not contained within quotes, will be evaluated using the OR operator. This means that your search results will contain all results that contain ANY of the entered terms.
AND, OR, NOT
SAE MOBILUS supports the use of the AND, OR and NOT BOOLEAN operators ONLY function with the Advanced Search.
Wild Cards
Using the asterisk, ( * ) allows you to search for a partial word. For example, entering a keyword search of aero* will search for any word beginning with aero.
Using the question mark, ( ? ) allows you to search for a word with a single character wildcard. For example, searching for t?re would match both tire and tyre
Using Quotes
Words in double quotes " " are treated as a phrase. Conducting a search for "heat model" will return all results in which the exact phrase "heat model" is found, while "heat modeling" would NOT be included.
A term combined with a phrase will be joined with an OR operator.
Searching for Standards
When searching for a standard please use the entire Document Number assigned, which includes the abbreviation. A space can be used, or omitted between the abbreviation and number.