BASE METAL SPECIFICATION

One important thing to produce high quality pruduct which compliance with national and international standard is raw materials quality. The main raw material for Saranalume (Galvalume) is cold rolled steel which know as CRC.

PT Saranacentral Bajatama always looking for cold rolled steel which compliance with SNI and AS 1397. To ensure the consistency of best raw material quality, PT Saranacentral Bajatama always chose vendor with national and internatinal good reputation.

The following standard materials used :

Nominal Thickness of Base Metals and The Tolerance

No.	Normal	Tolerance
No.	Thickness (mm)	630 < L ≤ 1000	1000 < L ≤ 1250
1	0.20	± 0,010	± 0,015
2	0.25	± 0,025	± 0,025
3	0.30	± 0,030	± 0,030
4	0.35	± 0,030	± 0,030
5	0.40	± 0,040	± 0,040
6	0.45	± 0,040	± 0,040
7	0.50	± 0,050	± 0,050
8	0.55	± 0,050	± 0,050
9	0.60	± 0,050	± 0,050
10	0.65	± 0,050	± 0,050
11	0.70	± 0,060	± 0,060

Chemical Composition of Base Metal

Symbol	Chemical Composition (% by Weight), Maximum
Symbol	C	Mn	P	S
G300	0.30	1.60	0.04	0.035
G550	0.20	1.20	0.04	0.030

PRODUCT SPECIFICATION

Testing and product classification “SARANALUME” (GALVALUME) refers to the SNI 4096:2007 and AS 1397-2001

Classification Based on Base Metal Mechanical Properties

No.	Symbol	Yield Strenght Min.	Tensile Strenght Min.	Elogation Min.	Usage
No.	Symbol	(N/mm2)	(N/mm2)	(%)	Usage
1	G300	300	340	20	Structure and Commercial Forming
2	G550	550	550	2	Structure

note 1 : G1, G2 dan G3 batang uji tarik tegak lurus arah pencanalan

note 2 : G250, G300 dan G550 batang uji tarik searah pencanalan

Classification Based on Coating Mass

No.	Symbol	Minimum Mass of Layer 55 % AlZn (gr/m2)
		2 Sides of the Surface		1 Sides of the Surface
		3 Test Points	1 Test Points	1 Test Points
		(Average)	(Individu)	(Individu)
1	AS50	50	45	20
2	AS70	70	63	28
3	AS100	100	90	40
4	AS150	150	135	60

Bending Properties

No.	Symbol	Maximum Bending
No.	Symbol	AS50	AS70	AS100	AS150
1	G300	1t	1t	1t	1t
2	G550	2t	2t	2t	2t

NON-SKINPASSED SURFACE

SKINPASSED SURFACE