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Zhengzhou Sebon Heavy Machinery Co.,LTD. is a leading precision casting manufacturer and precision casting exporter in China, with integrating precision casting, machining, sales all-in-one .

Our foundry mainly produces stainless steel precision castings parts, carbon steel precision castings parts, heat-resistant steel precision castings parts, alloy steel precision castings parts, cast copper precision castings parts, cast iron precision castings parts, high temperature alloy material precision castings parts. Material can meet domestic and international standards GB, AISI, DIN, JIS, EN, etc.. And we have passed ISO9001 and TS16949 international quality system certification.

ASTM 321 precision castings is widely used in auto,moto,railway and shipping construction machinery,mining machinery and engineering machinery industries.We can produce ASTM 321 precision castings according to your drawings.We can also do CNC machining and many kinds surface treatment, just tell us your requirements on physical properties and chemical compositions .

 

ASTM 321 precision castings chemical composition unit

 

Symbol	Chemical composition
	C  max	Mn max	P  max	S max	Si max	Cr max	Ni max
321	0.030	2.00	0.045	0.030	0.75	16.0-18.0	10.0-14.0

 

ASTM 321 precision castings Mechanical properties

 

Symbol	Yield point or proof stress  σb /MPa	Tensile strength  σb /MPa	Elongation % min	According to the contract
				HB
321	205	515	40	96

 

 

 

 

 

 

If you want to know more about ASTM 321 precision castings Dimensional Tolerance ,please feel free to contact us.