Tin Plating Color is gray-white in a plated condition. Has very high luster in fused condition. Soft, but is very ductile. Corrosion resistance is good. (Coated items should meet 24 hour 5% salt spray requirement). Solderability is excellent. Tin is not good for low temperature applications (changes structure and loses adhesion when exposed to temperatures below -40º C.) Plate directly on steel substance (no undercoating for steel unless otherwise specified).
Spec.	Thickness	Comment
MIL-T-10727C	As specified on drawing. Thickness guide (not part of spec.) as follows:	If not specified, matt will be generally provided Please note: This specification is provided for reference purposes only as it has been superceded by ASTM-B-545 (See below) and ASTM-B-339
Type I	--------------------------------------	Electrodeposited. Use ASTM-B-545 as guideline.
	.0001-.00025"	Flash for soldering
	.0002-.0004"	To prevent galling and seizing.
	.0003 min.	Where corrosion resistance is important
	.0002-.0006"	To prevent formation of case hardening during nitriding.
Type II	--------------------------------------	Hot dipped
Tin
Spec.	Thickness	Comment
ASTM-B-545-97e1		ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050".
Class A	.0001" min
Class B	.0002" min
Class C	.00032" min	.0004" min. for steel.
Class D	.0006" min	.0008" min. for steel.
Class E	.0012" min	ASTM requires purchaser to supply information, such as base metal, underplating, test requirements and test methods etc. In general, copper alloys containing more than 5% Zn shall have a copper undercoating of at least 0.0001" or nickel undercoating of at least 0.000050".
Type Matte
Type Bright
Type Flow- brightened	-------------------------------------	Flow brightening