Alloy 253MA fasteners bolt screw nut washer

Description

GB	253MA
ASTM	F 45
UNS	S30815
ISO	X7CrNiSiNCe 21-11
W-Nr.	1.4835

 

S30815 is a heat-resistant Austenitic stainless steel, designed for applications requiring high creep strength and good corrosion resistance.Its operating temperature range is 850~1100 ℃.

The chemical composition of S30815 is balanced, making the steel in the temperature range of 850℃-1100℃ has the most suitable comprehensive properties, high oxidation resistance, oxidation temperature up to 1150℃;High creep resistance and creep fracture strength;In most of the gas medium has a good high temperature corrosion resistance and brush corrosion resistance;High yield strength and tensile strength at high temperature;Good formability and weldability, and adequate machinability.

In addition to alloying elements chromium and nickel, S30815 stainless steel also contains a small amount of Rare Earth Metals (REM), which significantly improves its oxidation resistance.Nitrogen was added to improve creep properties and make the steel complete austenite.Despite the relatively low chromium and nickel content, this stainless steel has in many cases the same high temperature properties as highly alloyed alloy steels and nickel-based alloys.

Using range

S30815 is widely used in sintering equipment, blast furnace equipment, steel melting, furnace and continuous casting equipment, rolling mill (heating furnace), heat treatment furnace and accessories, mineral equipment and cement production equipment.S30815 steel can be used to 900 ℃ pressure occasions and working temperature up to 1150 ℃ non-pressure high temperature parts.

 

Chemical element content(%)

253MA	Min%	Max%
C	0.05	0.1
Si	1.4	2
Mn	–	0.8
P	–	0.04
S	–	0.03
Cr	20	22
Ni	10	12
N	0.14	0.2
Ce	0.03	0.08

Fastener type

BOLT	Hex bolt	DIN931(ISO 4014) DIN933(ISO 4017) DIN961(ISO 8676) ANSI B18.2.1 JIS B1180
	Hex flange bolt	DIN6921 ANSI B18.2.1
	Carriage bolt	DIN603(ISO 8677) ANSI B18.5
	Eye bolt	DIN580 DIN444
	Square head bolt	ASME B18.2.1 JIS B1182
	T bolt	DIN186 JIS B1166
	U bolt	DIN3570 IFI136 ASME B18.31.5
	Anchor bolt	ASME B18.31.5 JB/ZQ 4363 JB/ZQ4364
SCREW	Hex socket screw	DIN912(ISO 4762) DIN7984 DIN7991(ISO 10642) ISO 7380 ASME B18.3
	Machine screw	DIN963(ISO 2009) DIN964(ISO 2010) DIN965(ISO7046) DIN966(ISO7047) ANSI B18.6.3P ANSI B18.6.3F DIN84(ISO 1207) DIN85(ISO 1580)
	Set screw	DIN913(ISO 4026) DIN914(ISO 4027) DIN915(ISO 4028) DIN916(ISO 4029 ) ANSI B18.3
	Tapping screw	ISO7049 ISO 7050 JIS B1122T DIN7982 DIN968
	Wooden screw	DIN571 ANSI B18.2.1
NUT	Hex nut	DIN 934(ISO 4032) ANSI B18.2.2 ANSI B18.2.4 DIN 936(ISO 4035) DIN 439(ISO 4036) ISO 8674(UNI 5587)
	Hex flange nut	DIN6923(ISO 4161 ANSI B18.2.4.4M) IFI 145
	Lock nut	DIN985 DIN982 DIN980 DIN6926 ANSI B18.16.6
	Cover nut	DIN1587 DIN917
	Square nut	DIN557 DIN562 ANSI N18.2.2
STUD	Stud	DIN975 DIN976 IFI136
WASHER	Flat washer	DIN125(ISO 7089/ISO 7090) DIN126(ISO 7091) DIN9021(ISO 7093) ANSI B18.22.1
	Spring washer	DIN127 DIN7980