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Product detail

Product size

diameter	0pitch	K	K	S	S
d	P	MAX	MIN	MAX	MIN
M3	0.5	2.2	1.9	5.5	5.25
M3	0.7	3	2.8	7	6.65
M5	0.8	3.74	3.26	8	7.65
M6	1	4.24	3.76	10	9.65
M7	1	5.04	4.56	11	10.57
M8	1.25	5.54	5.06	13	12.57
M9	1.5	6.69	6.11	17	16.57
M12	1.75	7.79	7.21	19	18.48
M14	2	9.09	8.51	22	21.16
M16	2	10.29	9.71	24	23.16
M18	2.5	11.85	11.15	27	26.15
M20	2.5	12.85	12.15	30	29.16

 

Chemical composition

group	C	Si	Mn	P	S	Cr	Mo	Ni	Cu	Feature
304-A2 %	0.1	1	2	0.05	0.03	15-20		8-19	4	The work hardening rate is moderate, which is suitable for general cold processing and stretching, cold working performance is good, generally used for six angle screw, nut and washer products.
316-A4 %	0.08	1	2	0.05	0.03	16-18.5	2-3	10-15	1	Corrosion resistance is more than 304, especially suitable for sea water and chemical media, more corrosion resistance and pitting corrosion resistance

 

Mechanical properties

Type	group	Performance level	Screw nominal diameter	tensile strength mpa/mm2	elongation mpa/mm2	Breaking elongation mpa/mm2
austenite	A2,A4	50	<=39	500	210	0.6d
austenite	A2,A4	70	<=24	700	450	0.4d
austenite	A2,A4	80	<=24	800	600	0.3d

 

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Choose stainless steel fasteners now!

 

Questions

 

Why stainless steel is magnetic?

304 stainless steel is austenitic stainless steel, When the austenite is in the cold working process, there are small amount of austenite transform to martensite . Martensite is magnetic, so the 304 stainless steel is non - magnetic or micro - magnetic.

 

How to identify authentic 304 stainless steel products?

Special detection potion detection, if colour is not changed.It's authentic 304 stainless steel.

 

What are the most commonly used stainless steel?

A. 201 stainless steel  B. 304 stainless steel  C. 316 stainless steel