ISO 8062-3 Sand Casting Linear Dimensional Tolerances

DCT: Dimensional casting tolerance
DCTG: Dimensional casting tolerance grade ( The total range, divide by 2 to get the individual ± tolerance)- total band (upper limit – lower limit)

Dimensional casting tolerance grades for long-series production raw castings

Method	Dimensional casting tolerance grade (DCTG) for casting material
	Steel	Grey cast iron	SG cast iron	Malleable cast iron
Sand cast, hand moulding	11 to 14	11 to 14	11 to 14	11 to 14
Sand cast, machine moulding and shell moulding	8 to 12	8 to 12	8 to 12	8 to 12

Dimensional casting tolerance grades for short-series or single-production raw castings

Method	Moulding material	Dimensional casting tolerance grade (DCTG) for casting material
		Steel	Grey cast iron	SG cast iron	Malleable cast iron
Sand cast, hand moulding	Clay-bonded	13 to 15	13 to 15	13 to 15	13 to 15
	Chemically bonded	12 to 14	11 to 14	11t o 14	11 to 14

Linear dimensional sand casting tolerances (DCT)^a

Nominal dimensions related to the moulded part		DCT8	DCT9	DCT10	DCT11	DCT12	DCT13	DCT14	DCT15	DCT15wtb
–	≤ 10	±0.5	±0.75	±1	±1.4	±2.1	–	–	–	–
> 10	≤ 16	±0.55	±0.8	±1.1	±1.5	±2.2	–	–	–	–
> 16	≤ 25	±0.6	±0.85	±1.2	±1.6	±2.3	±3	±4	±5	±6
> 25	≤ 40	±0.65	±0.9	±1.3	±1.8	±2.5	±3.5	±4.5	±5.5	±7
> 40	≤ 63	±0.7	±1	±1.4	±2	±2.8	±4	±5	±6	±8
> 63	≤ 100	±0.8	±1.1	±1.6	±2.2	±3	±4.5	±5.5	±7	±9
>100	≤ 160	±0.9	±1.25	±1.8	±2.5	±3.5	±5	±6	±8	±10
>160	≤ 250	±1	±1.4	±2	±2.8	±4	±5.5	±7	±9	±11
>250	≤ 400	±1.1	±1.6	±2.2	±3.1	±4.5	±6	±8	±10	±12.5
>400	≤ 630	±1.3	±1.8	±2.5	±3.5	±5	±7	±9	±11	±14
>630	≤1000	±1.4	±2	±3	±4	±6	±8	±10	±13	±16
>1000	≤ 600	±1.6	±2.3	±4	±5	±7	±9	±12	±15	±19
> 1600	≤2500	±1.9	±2.7	±4	±5	±8	±11	±13	±17	±21
>2500	≤4000	±2.2	±3.1	±5	±6	±9	±12	±15	±19	±25
>4000	≤6300	–	±3.5	±5	±7	±10	±14	±18	±22	±28
>6300	≤10000	–	–	±6	±8	±12	±16	±20	±25	±32

^a For wall thicknesses in grade DCTG 1 to DCTG 15, one grade coarser applies
^b Grade DCTG 15wt (wall thickness) exists only for wall thicknesses of castings generally specified to DCTG 15.

Linear dimensional tolerance for dimensional casting tolerance grade (DCTG)^a

Nominal dimensions related to the moulded part		DCTG8	DCTG9	DCTG10	DCTG11	DCTG12	DCTG13	DCTG14	DCTG15	DCTG 15wtb
–	≤ 10	1	1.5	2	2.8	4.2	–	–	–	–
> 10	≤ 16	1.1	1.6	2.2	3	4.4	–	–	–	–
> 16	≤ 25	1.2	1.7	2.4	3.2	4.6	6	8	10	12
> 25	≤ 40	1.3	1.8	2.6	3.6	5	7	9	11	14
> 40	≤ 63	1.4	2	2.8	4	5.6	8	10	12	16
> 63	≤ 100	1.6	2.2	3.2	4.4	6	9	11	14	18
> 100	≤ 160	1.8	2.5	3.6	5	7	10	12	16	20
> 160	≤ 250	2	2.8	4	5.6	8	11	14	18	22
>250	≤ 400	2.2	3.2	4.4	6.2	9	12	16	20	25
>400	≤ 630	2.6	3.6	5	7	10	14	18	22	28
>630	≤1000	2.8	4	6	8	11	16	20	25	32
>1000	≤1600	3.2	4.6	7	9	13	18	23	29	37
> 1600	≤2500	3.8	5.4	8	10	15	21	26	33	42
>2500	≤4000	4.4	6.2	9	12	17	24	30	38	49
>4000	≤6300	–	7	10	14	20	28	35	44	56
>6300	≤10000	–	–	11	16	23	32	40	50	64

^a For wall thicknesses in grade DCTG 1 to DCTG 15, one grade coarser applies
^b Grade DCTG 15wt (wall thickness) exists only for wall thicknesses of castings generally specified to DCTG 15.

ISO 2768-1 and ISO 2768-2 Tolerances

Investment Casting Tolerances VDG P690

MODULUS METAL
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