Material
Specification 9981833
Paints
Mill Oil - Corrosion Preventative for Sheet Metal
1 Scope under properties. These materials are classified ac-
cording to the surfaces being protected.
This specification detail the requirements of oil for-
mulations that must be compatible with current pro- 3.1.1 Chemical Requirements. No silicone or lano-
duction processes and paint systems used to protect lin compound of any kind is allowed in the material.
sheet metal surfaces against corrosion and stains. 3.1.2 Mechanical Requirements. Not applicable.
Steel mills and processors must apply these materi-
als at the following levels: 3.1.3 Physical Requirements.
1.3 – 2.1 g/m2 3.1.3.1 Surface Description. 9981833: Cold rolled,
textured or hot rolled and oiled sheet steel.
This should be calculated by a minimum of five mea-
9981836: One (1) side zinc coated sheet steel (hot
surements equally spaced across the width of the
dipped galvanize or electrogalvanize).
sheet. Any deviations from this requirement must be
spelled out on the Metal Parts Specification (MPS) 9981839: Two (2) side zinc coated sheet steel (hot
sheet or the purchase order. dipped galvanize or electrogalvanize).
1.1 Material Description. Subparagraphs were not 9981842: Prepainted sheet steel.
applicable. 3.1.3.2 Coating Mass. Coating mass shall be deter-
1.2 Cross-Reference of Replaced Specifications. mined by: Method 1 - An infrared or ultraviolet based
Subparagraphs were not applicable. instrument of sufficient accuracy and repeatability, or
Method 2 - the weight-strip-weigh method. In cases
1.3 Symbol. Not applicable. of disputes the referee method shall be Method 2.
1.4 Typical Application. Not applicable. 3.1.4 Additional Requirements. Not applicable.
1.5 Remarks. Not applicable. 3.2 Processing Requirements.
3.2.1 Compatibility with Phosphate System
2 References (GM9611P). The supplier of the material must have
Note: Only the latest approved standards are appli- an approved GM phosphate system source perform
cable unless otherwise specified. the test. The result must be submitted in writing to the
GM Car and Truck Group, Paint Engineering Activity.
2.1 Normative.
3.2.2 Compatibility with Structural Adhesive,
ISO 11014-1 (GM3623M). The material must meet the require-
ments of GM3623M or limits set by the design
2.2 GM.
engineer.
GM3623M GM9611P
3.2.3 Welding Requirement (GM9615P). The ma-
GM9612P GM9613P
terial must perform comparable to or better than the
GM9615P GM9617P
currently approved reference (control) 9981833.
GMW3059 9981836
9981839 9981842 3.2.4 Appearance. Immediately after the final rinse
and before drying, the phosphated surfaces shall ex-
hibit a continuous water film. The dry phosphated
3 Requirements surface on all substrates, when visually compared,
3.1 Requirements on Delivery. Specific material re- shall be uniform (no visible holes in the coating when
quirements and appropriate test methods are listed viewed at 250 and 500 X).
© Copyright 2001 General Motors Corporation All Rights Reserved
Originating Department: North American Engineering Standards, Records and Documentation
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April 2001
Copyright General Motors Company
Page 1 of 3
Provided by IHS under license with General Motors Company Licensee=Magna International Inc/5926707001
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9981833 GM ENGINEERING STANDARDS
3.2.5 Crystal Size (GM9613P). Crystal size shall be 4 Manufacturing Process
small when viewed under 250 X magnification:
Not applicable.
Small . . . . . . . . . . . . . . . . . . . . . . . . 2-10 µm 5 Rules and Regulations
Medium . . . . . . . . . . . . . . . . . . . . . 11-25 µm 5.1 Legal Regulations. For use of this material the
Large. . . . . . . . . . . . . . . . . . . . . . . . > 25 µm valid laws and other regulations and recommenda-
tions in the country of usage have to be followed.
3.2.6 Coating Mass. Coating mass shall be deter- 5.2 Language. Not applicable.
mined by the weigh-strip-weigh method:
5.3 Restricted and Reportable Substances for
Parts. All materials supplied to this specification
Substrate Coating Mass must comply with the requirements of GMW3059,
g/m2 mg/ft2 Restricted and Reportable Substances for Parts.
5.4 Inspection and Rejection. All shipments of ma-
Cold Rolled Steel 1.1-2.7 100-250
terials or parts under contract or purchase order man-
Galvanized 1.6-3.3 150-300 ufactured to this specification shall be equivalent in
every respect to the initial samples approved by engi-
Aluminum 1.1-2.2 100-200
neering. There shall be no changes in formulation or
manufacturing process permitted without prior notifi-
Note: GM Paint Engineering, not the phosphate sup-
cation and approval by engineering. Lack of notifica-
plier, will determine the disposition (pass or reject)
tion by the supplier constitutes grounds for rejection
based on the results.
of any shipment. While samples may be taken from
3.2.7 ELPO Primer Compatibility (GM9612P). A incoming shipments and checked for conformance to
rating of six or better on a scale of zero to ten, with this specification, the supplier shall accept the respon-
ten being the best, is required. sibility for incoming shipments meeting this specifi-
cation without dependence upon purchaser’s inspec-
3.3 Performance Requirements.
tion.
3.3.1 Corrosion Resistance (GM9617P). Sheet
5.5 Initial Source Approval. No shipments shall be
metal coated with the material must not exhibit rust or
made by any supplier until representative initial pro-
staining under normal shipping, handling or storage
duction samples have been approved by Materials
conditions which would impair processing the sheet.
Engineering as meeting the requirements of this spec-
3.3.1.1 The material tested per GM9617P must not ification.
exhibit more corrosion or staining than the control 5.6 Safety Data Sheet. Completed copies of the
panels after one, five, and ten cycles, with no more Material Safety Data Sheets meeting GM information
than slight stain or corrosion being acceptable after requirements, consistent with ISO 11014-1 standard
ten cycles. must be submitted with any new material submissions
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3.4 Requirements on other Stages during Life Cy- or where a composition change has occurred.
cle.
3.4.1 Waste Treatment. The material must be com- 6 Approved Sources
patible with existing waste treatment processes so Engineering qualification of an approved source is re-
that total removal can be achieved. The supplier shall quired for this specification. Only sources listed in the
be responsible to make known the processing proce- GM Material File under this specification number have
dures for any component of the material for which the been qualified by engineering as meeting the require-
waste treatability is in question. ments of this specification.
© Copyright 2001 General Motors Corporation All Rights Reserved
Page 2 of 3
Copyright General Motors Company
April 2001
Provided by IHS under license with General Motors Company Licensee=Magna International Inc/5926707001
No reproduction or networking permitted without license from IHS Not for Resale, 04/12/2011 13:24:07 MDT
GM ENGINEERING STANDARDS 9981833
7 Coding System 8.2 Revisions.
This material specification shall be called up in other
documents, drawings, VTS, CTS etc. as follows: Rev. Date Description (Org.)
Example: B APR 2000 Revised format and renumbered,
9981833 1, 2, 5.1, 5.3, 5.6, 7. (GM)
C APR 2001 Editorial Revision (GM)
8 Release and Revisions
8.1 Release. This specification was first approved
and published in March 1977.
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© Copyright 2001 General Motors Corporation All Rights Reserved
Copyright General Motors Company
April 2001 Page 3 of 3
Provided by IHS under license with General Motors Company Licensee=Magna International Inc/5926707001
No reproduction or networking permitted without license from IHS Not for Resale, 04/12/2011 13:24:07 MDT
