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SPCC vs. SGCC vs. SECC steel for computer cases

Q. For computer casings, there's 3 types of material, which are SPCC, SGCC & SECC. Can anyone help to explain to me what is the difference for these 3 types? In terms of what are their differences?

Wee Ming Low
IT Distributor - Malaysia
July 28, 2011

A. Hi, Wee.

Unfortunately, acronyms become detached from their source and then people don't agree about what they stand for :-(

But, we have a thread that says:
- SPCC is "commercial quality, cold rolled carbon steel" per Japanese standard JIS G3141, so you might want to obtain that specification.
- SGCC is hot dip galvanized. Although some say that the "CC" stands for chromate coated, I disbelieve the 'chromate coated' and believe it means "cold rolled, coil" or "cold rolled, commercial quality".
- SECC means electrogalvanized (zinc plated).

So it sounds like SPCC would be appropriate for parts that you are going to paint or plate yourself, SGCC would be for maximum corrosion resistance (not likely needed for typical computers), and SECC would be for sheet metal that you won't further treat. Good luck!


Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

thumbsdown The poster clearly stated, "For computer casings, there's 3 types of material, which are SPCC, SGCC & SECC..." So it is for Computer casings that he is referring to. What sort of ACRONYM do you need, Ted Mooney?? Non-sense!!

Taki Lee
- Atlanta, Georgia
January 25, 2021

thumbs up sign Hi Taki. Wee Ming says he wants to know what the acronyms SPCC, SGCC, and SECC mean and their differences. I answered his question of what I think they stand for, and where & why you would choose one over the other.

If you can improve on my answer, Wee Ming and other readers would probably appreciate it! I don't think he or our other readers come here for ad hominem attacks.

Luck & Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

A. Dear Mr. Wee,
All of them are based on the Japanese Industrial Standard for flat steel. SPCC is for cold roll steel commercial quality. For computer casing it should be SPCC-S.
SGCC is hot dip galvanized steel sheet commercial quality annealed.
SECC is electro galvanized commercial quality annealed. You will have a problem painting SGCC.

Kwee Voo
- Karachi, Pakistan

A. Hi Gents.

These are JIS terms and their full names are:

SPCC = Steel Plate Cold Commercial
SECC = Steel Electrolytic (Galvanized) Cold Commercial
SGCC = Steel (Hot Dip) Galvanized Cold Commercial

Jinsoo Kim
- San Francisco
October 18, 2022

Q. Hello
We are asked for a quote where material is described: "SECC E16/E16 or SGCC"
Aren't those two qualities different (electrogalvanized and hot dip galvanized)?
What would be an alternative materials according to EN standard?

Jovtika Dali
- Lithuania
March 30, 2012

← Posters: please describe Your actual situation.

Q. What is equivalent material for SGCC ?

Where can I source for material SGCC ?

GC Goh
Wong Engineering - Kedah, Malaysia
November 3, 2019

A. Hi GC. If your customer wants "SGCC per JIS 3302" then there is actually no 'equivalent', there is just compliance or non-compliance with what Japanese Industrial Standard spec calls for. But if "SGCC" means something more colloquial to you, like "a metal that can used for electronic equipment frames" please explain with more words exactly what you want so people can help you source it. Thanks!


pic of Ted Mooney
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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