BS DIN EN 1.4021 stainless Steel Studs | UNS S42000

Werkstoff 1.4021 Stainless Steel Studs

420S37, BS2303, 1.4021, 420J1, S42000, X20CR13

1.4021 Fasteners like Studs are classified under Stainless Steel. Werkstoff 1.4021 Fasteners are internationally known as fasteners manufactured from 420 Stainless Steel.

Related Products

420 SS Bolts 420 SS Fasteners 420 SS Forgings 420 Stainless Steel Nuts SS 420 Screws 420 SS Threaded Rod 420 Stainless Washers 1.4021 Threaded Rod

Werkstoff 1.4021 Stainless Steel Studs Properties

Werkstoff 1.4021 Stainless Steel Studs Common Designations for cold heading

Type Of Steel/Alloy	Grade	Steel Number	Steel Designation	UNS	Trade Name
General purpose martensitic	C1	1.4021	X20Cr13	S42000	420

Werkstoff 1.4021 Stainless Steel Studs Chemical Requirements

Stainless steel grade		Chemical composition ^a (cast analysis, mass fractionin %) ^b										Other elements and notes
Stainless steel grade		C	Si	Mn	P	S	Cr	Mo	Ni	Cu	N	Other elements and notes
Martensitic	C1	0,09 to 0,15	1,00	1,00	0,050	0,030	11,5 to 14,0	-	1,00	-	-	ⁱ

Werkstoff 1.4021 Stainless Steel Studs Mechanical Requirements

Mechanical properties (Martensitic and Ferritic Steel)

Stainless steel grade		Property class	Tensile strength ^a R_mr min. MPa	Stress at 0,2 % non-proportional elongation ^b R_pr mm. MPa	Elongation after fracture A min. mm	Hardness min. to max.
Stainless steel grade		Property class	Tensile strength ^a R_mr min. MPa	Stress at 0,2 % non-proportional elongation ^b R_pr mm. MPa	Elongation after fracture A min. mm	HV	HRC	HBW
Martensitic	C1	50	500	250	0,2d	155 to 220	-	147 to 209
		70	700	410	0,2d	220 to 330	20 to 34	209 to 314
		110 c	1100	820	0,2d	350 to 440	36 to 45	-

Applicability of tests for fasteners with full loadability

Stainless steel grade	Property and related test method
	Minimum tensile strength Rmr		Stress at 0,2 % non-proportional elongation Rpf	Elongation after fracture A	Minimum breaking torque M B	Hardness
	Tensile test 9.1	Wedge tensile test 9.4	Tensile test 9.1	Tensile test 9.1	Torsional test 9.5	Hardness test 9.6
C1	d ≥ 3 mm I ≥ 2,Sd b ≥ 2d	d ≥ 3 mm I ≥ 2,Sd b ≥ 2d	d ≥ 3 mm I ≥ 2,Sd b ≥ 2d	d ≥ 3 mm I ≥ 2,Sd b ≥ 2d	No value available	Applicable

Applicability of tests for fasteners with reduced loadability

Stainless steel grade	Property and related test method
	Minimum tensile strength R_mr	Stress at 0,2 % non-proportional elongation R_pf	Elongation after fracture A	Minimum tensile load F_mr	Hardness
	Tensile test 9.1, 9.3	Tensile test 9.1	Tensile test 9.1	Tensile test 9.2	Hardness test 9.6
C1 C3 C4	d ≥ 3 mm for all lengths, when b ≥ 3d ^a			d ≥ 3 mm for all lengths	Applicable

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