Foundry sand selection reference.

This is a material-selection resource, not a casting product page. It preserves the supplier catalog categories while avoiding performance claims that are not independently defined in the source.

Send an RFQ →Review source plates

Scope control

What this page can verify.

Three source plates cover the listed sand categories
Translate category names into the RFQ, then confirm grade and test method
Do not infer casting performance from a category name alone

Evidence status

Model labels and visible dimensions come from the supplied HBHT catalog. Final drawings, tolerances, material certificates and performance values are confirmed per quotation.

Verified HTML specifications

Foundry Sand Grades: catalog page 34.

Every visible value below was transcribed from the supplied PDF and checked against the high-resolution source.

Catalog 34

Foundry sand grades MLD-H-70, MLD-TN-70, MLD-C-70 and MLD-DK-70

MLD-H-70 / MLD-TN-70 / MLD-C-70 / MLD-DK-70

Ordinary sand sample for grade MLD-H-70 — Source sample photograph labeled Ordinary sand.

Hainan sand sample for grade MLD-TN-70 — Source sample photograph labeled Hainan sand.

Baozhu sand sample for grade MLD-C-70 — Source sample photograph labeled Baozhu sand.

Empty sand sample for grade MLD-DK-70 — Source sample photograph labeled Empty sand.

Foundry sand grade properties and source application statements
Grade	Source sand type	Flexural strength row 1 (MPa)	Flexural strength row 2 (MPa)	Gas evolution (ml/g)	High-temperature resistance time (s)	Source scope of application
MLD-H-70	Ordinary sand	7.0–11.0	3.5–5.5	14–18	130–170	Suitable for most shell-film casting production
MLD-TN-70	Hainan sand	9.0–12.0	4.5–6.0	16–20	140–180	Applicable to the production of steel castings with general requirements
MLD-C-70	Baozhu sand	10.0–13.0	5.0–6.5	11–15	100–140	High strength, high-temperature resistance, low gas generation, good fluidity and fast curing; mainly used for complex oil and steam passages, high-surface-requirement cast-steel parts and high-precision products
MLD-DK-70	Empty sand	6.0–10.0	3.0–5.0	13–16	120–150	Mainly used for products with sand cores that need to be emptied, such as pipe fittings

Catalog dimensions are sourcing references. Confirm tolerances, rated load, material grade and finish on the approved quotation or production drawing.

Verified HTML specifications

Special Foundry Sand Grades: catalog page 35.

Every visible value below was transcribed from the supplied PDF and checked against the high-resolution source.

Catalog 35

Special foundry sand grades MLD-CS-G70, MLD-BGT-70, MLD-C-100 and MLD-B-G70

MLD-CS-G70 / MLD-BGT-70 / MLD-C-100 / MLD-B-G70

Coarse-grained sand sample for grade MLD-CS-G70 — Source sample photograph labeled Coarse grained sand.

Chill Sand sample for grade MLD-BGT-70 — Source sample photograph labeled Chill Sand.

Stainless-steel special sand sample for grade MLD-C-100 — Source sample photograph labeled Stainless steel special sand.

High-temperature-resistant special sand sample for grade MLD-B-G70 — Source sample photograph labeled High temperature resistant special sand.

Special foundry sand grade properties and source application statements
Grade	Source sand type	Flexural strength row 1 (MPa)	Flexural strength row 2 (MPa)	Gas evolution (ml/g)	High-temperature resistance time (s)	Source scope of application
MLD-CS-G70	Coarse grained sand	10.0–14.0	5.0–7.0	12–16	110–150	High strength, high-temperature resistance, low gas generation, good fluidity and fast curing; mainly used for complex oil and steam passages, high-surface-requirement cast-steel parts and high-precision products, with better recycling performance
MLD-BGT-70	Chill Sand	5.0–8.0	2.5–4.0	13–16	110–140	Used in casting to absorb and remove heat through high thermal conductivity, accelerate solidification and cooling, improve metallographic structure, refine grain size and enhance mechanical properties; the source then ends with the incomplete phrase Assist in
MLD-C-100	Stainless steel special sand	10.0–14.0	5.0–7.0	12–16	110–150	Used in casting to absorb and remove heat, accelerate solidification and cooling, improve metallographic structure, refine grain size and enhance mechanical properties; stated to assist with shrinkage and looseness
MLD-B-G70	High temperature resistant special sand	6.0–10.0	3.0–5.0	13–16	150–170	Low thermal-expansion coefficient, good sand-mold stability and reduced casting defects; mainly used for precision castings and complex-shaped parts and stated to replace some precision-casting products

Catalog dimensions are sourcing references. Confirm tolerances, rated load, material grade and finish on the approved quotation or production drawing.

Verified HTML specifications

Application-Specific Foundry Sand Grades: catalog page 36.

Every visible value below was transcribed from the supplied PDF and checked against the high-resolution source.

Catalog 36

Application-specific sand grades including MLD-B-G70A (site-assigned)

MLD-B-G70A / MLD-H-F60 / MLD-CL-70 / MLD-ZD-60

High-strength low-gas special sand sample; source grade MLD-B-G70, site-assigned MLD-B-G70A — Sample photograph for the high-strength and low-gas-generation special sand.

Anti-subcutaneous-porosity special sand sample grade MLD-H-F60 — Sample photograph for the source category Special sand for anti subcutaneous stomata.

Easy-disintegration special sand sample grade MLD-CL-70 — Sample photograph for the easy-disintegration special sand.

Automatic-coring special sand sample grade MLD-ZD-60 — Sample photograph for the automatic-coring special sand.

Application-specific sand grade properties and source application statements
Website grade	Source grade	Source sand type	Flexural strength row 1 (MPa)	Flexural strength row 2 (MPa)	Gas evolution (ml/g)	High-temperature resistance time (s)	Source scope of application
MLD-B-G70A	MLD-B-G70	High strength and low gas generation special sand	8.0–12.0	4.0–6.0	14–17	145–165	Mainly used for sand cores in internal cavities such as oil passages and steam passages
MLD-H-F60	MLD-H-F60	Special sand for anti subcutaneous stomata	6.5–10.0	3.0–5.0	13–16	120–160	Mainly used to solve subcutaneous porosity after casting processing
MLD-CL-70	MLD-CL-70	Special sand for easy disintegration	4.0–7.0	2.0–4.0	8–12	70–110	Mainly used to solve subcutaneous porosity after casting processing
MLD-ZD-60	MLD-ZD-60	Special sand for automatic coring	8.0–12.0	4.0–6.0	15–18	130–160	Mainly used for casting low-melting-point alloys such as cast aluminum

Catalog dimensions are sourcing references. Confirm tolerances, rated load, material grade and finish on the approved quotation or production drawing.

Related paths

Continue the product review.

Send the catalog model, quantity and destination market.

Request a Confirmed Quote →